The need to escalate the experiences to the point where boundaries and limits are constantly being tested is addictive.
In other thoughts...
The Other Woman narrative around Kink hold strong with attitudes about "vanilla" and how everyone else isn't in on the secret. Secret spaces bind people in secret pacts. But secret rooms are just that, and most men are not being honest in the secret rooms either. Men who are having affairs are not being more honest with their affair partners, not even if they are having the kind of sex they have always fantasised about, because they are usually telling lies about the woman at home. Usually the affair partner isn't an upgrade but a collection of willing body parts he can mindlessly use and then easily walk away from. She might feel like they have intimacy and special attention but he's not staying to provide security or comfort or the actual practice of love.
The kink scene uses the language of safety and infantile words such as "play" as other posters have also pointed out - knife play, breathe play...
Beyond one night stands, I've never been in a long term relationship with a man who ever classified tops/bottoms/sub/dom because these are men who are just having sex on an EQUAL level with a woman they love and also hold as an equal. The power dynamic isn't there because they aren't men addicted to a power dynamic and I'm not interested in power dynamics in bed, I'm interested in sex without games. In a partner who gives as much as he takes. My female peers in the 90's used to joke generally about submissive men being lousy lovers who can't give pleasure, and dominant men as being insensitive lovers who just get it done their way without waiting to ask you want you would like. We will all die one day, we don't have time for selfish lovers. Both types in their fetish persona extremes are selfish.
Intimacy isn't just about how someone turns you on. Intimacy isn't bloodletting or strangulation so you can get a more intense orgasm because you've desensitised your body so much you can't have an orgasm without having to use a power drill.
Intimacy is about dropping the pretence and the self deception. In other cultures sex holds a different place, in the culture I come from for example, sex is seen as a spiritual bonding, the focus can be on sensuality, deep connection, a willingness to see the other as a cosmic being equal to yourself. And if you have a partner who holds these values then it's ludicrous to suggest that they secretly crave some grubby pink toes over something as elevated and "high" as someone who sees him as a whole man, a provider, nurturer, protector, who also has pain, shame and a need for protection himself. It's ridiculous to think that men who have evolved to this level of self awareness would be comfortable strangling another human because who in their right mind for one second would risk oxygen starvation to the brain of someone they profess to love?
If a person doesn't love you, they can do anything dehumanising to you that he wants, and it's a game of seeing what the bodily reaction will be, how much your skin and orifices will break and bleed. If a someone doesn't love themselves it's easy for them to beg to be humiliated. None of this is sex. It's the abyss. Everything becomes about hard, fast obliteration to an end goal that doesn't care about you or them, but instead merges you both in pain and endorphins. It's self harm plus orgasm to "seal the deal".
People who have been sexually abused and who are healing from those power dynamics don't want more pain, they want healing experiences. When someone who has been so desensitised by abuse and coercion starts to come back to themselves and look at the rubble of the destruction that has occurred and the lies they have had to tell themselves and others in order to keep locked in the abuse cycle that they are perpetuating by participating, they often reject anything that doesn't feel connected, real, lasting and safe. There are many men I've worked with who have been sexually abused who instead of acting out the abuse on others will reject the abuse power dynamics and instead choose partners who see them as equals. One man said to me that his wife "has his back" and the idea of having sex with another woman "who doesn't have my back, makes me feel like she might turn on me or physically attack me and I wouldn't be able to sleep." Men are a bit more complicated than the snapshot of them that casual sex, sex workers or fetishists get to fully comprehend from the limitations of the brief encounter.
The kink scene whilst using the language of consent and safety, plus the infantile word "play" added to every unsafe practice imaginable, can hide the exploitation and abuse, under the guise of consensual word use as a shield to justify their actions. They may claim that harm is part of the play or manipulate partners into unsafe situations under the guise of “pushing boundaries.” There are goals, boundaries to push. Like gender ideology uses words to veil and hide intent under rainbows, there are goals, extreme goals, to prove how non vanilla you are, how exalted you have become (Clive Barker really pin (heads) this down in his ritualistic Hellraiser religious overtones)
Kink becomes a religion for believers and damn you if you don't get it.
Everything must be harder, nastier, dirtier, riskier... did something tear deep inside or is that a portal to oblivion where to quote one of Neil Gaiman's victims "The pain was celestial".
Or back in the real world you could just relax with a nice cup of tea after a really good shag and wait in bed for him to bring you some chocolate whilst all the lovey dovey feel good hormones bond you and flood you with joy and you know what it feels like to be listened to and cared for.
I said care for and not "aftercare" which sounds like some kind of perfunctory medical check up after someone has had an operation.
And this whole consent bullshit that has been spouted - fucking cheating married men with your feet takes away consent from their partners so maybe the Fetlife posters shouldn't come on all santimonious about that. A "vanilla" partner that you are feeling sorry for who is being cheated on cannot consent to sex without her knowledge of what else he's doing so really it's rape of his partner that is being encouraged and enabled by this so called secret safe space FetFoot and weak man are holding between them.