What is it about being dominated that is enjoyable and erotic? Psychologically speaking?
I don't really like answering this question because it's one of those things which, if you've not experienced it or aren't into it, it is really hard to understand. It's like asking gay men why they're not attracted to women when women are so beautiful. Why does anyone enjoy anything sexual?
However, to try....I like having his attention on me. I like being able to give up control (to a degree...the sub's always in control really. Safewords and limits.). I like the thrill of surrender. I like the eroticism and intensity of controlled pain within my tolerance, it makes me feel alive and gives me endorphins and a little bit of suffering heightens intensity and feelings of submissiveness. I like that he desires me so much he works for my submission and considers it worth having. I like his skill. I like that he cares for me - I've done some odd and somewhat painful things but I have never, ever felt uncared for - and will always stop immediately and make sure I am all right if I use my safe word (only ever happened once in many years). I like that he gently pushes my limits to introduce me to new things I had never considered, and talks about them with me. I like the self discovery. I like the fact that I know his kinks go deeper than mine, but he controls them and reigns them in because he is looking after me. I may not show it much in everyday life, but I do have a desire to be pleasing to the right kind of person, and I can express that with him.
I'm the one being tied up and hurt, but actually I'm being sexually liberated. And he's the one dominating, but actually he's the one being restrained - because he isn't allowed to do anything that I don't permit.
And I love the aftercare. I love the high I feel, the intense closeness to my Dom, the love I feel for everyone on the planet really. I like the way I bloody LOOK after a good session - really red cheeks and lips even if I'm not wearing makeup. I actually look beautiful after a session and believe me I'm nothing special.
I say BDSM can be done between fuckbuddies and it absolutely can. In my case, though, it's always been as part of a loving relationship and still is. We are giving each other what we need. I could put this all down simply to 'I have a need to be sexually submissive'. If you don't have that need, fine....but some of us have. Lots of us. Most of us, I think, to a greater or lesser degree.
But, as I can't stress often enough - you MUST trust your partner and the Dom MUST care for the sub's wellbeing. You must NEVER feel that your Dom will do anything he likes with no thought as to how it affects you.
This is also why the 'community' that someone upthread sneered at is important. People who are new to this or inexperienced don't always know what it should look like. A community will help to ensure that they are not coerced into anything they do not want or would find harmful, and means you can meet like minded people without having to have a clumsy conversation about it. If it's not your thing, fine, but just trust that for some people it is. ("Polite perverts" is how one friend puts it.)
My husband is a very dominant and kinky man (did you notice?) and he was one of the most vocal people I know in the 'me too' campaign. Safe, sane and consensual is everything.