I'm donning my hard hat for this...
I suspect that the reason the thread interests you so much is because, frankly, a LOT of people have an interest in BDSM. Far more people have an interest in it than actually participate in it. When you realise what a wide spectrum of likes and behaviours it encompasses, I actually think that you could find elements of it in almost everyone. I'm sure there are plenty of things that wouldn't interest you at all (same for me - by scene standards, I'm really pretty tame) but if you're reading this thread with interest, it's probably because it's speaking to some part of you.
Submission is scary sometimes. That's the edge of it. You can love and hate something at the same time and you're pushing yourself. I find, though, that on the very rare occasions when something really, truly would take me in a bad direction, something switches inside me. It's no longer a feeling of 'oh God, I can't, I mustn't' and becomes, 'No. Fuck no. Absolutely not.'
If you have some understanding of hypnosis, it can help you to get your head round this. I've had this conversation with my hypnotherapist, and she explained to me that hypnosis can basically strip your inhibitions and bring you into a more suggestible and open mental state. But it cannot make you do anything you truly don't want to do. It doesn't work that way. You could hypnotise me to do something a bit embarrassing if it pleases my Dom. You couldn't hypnotise me to, say, harm a child.
Why home in on this violent/dominance aspect of make believe when there must be a million other ways to introduce fun and imagination into sex.
I'd be interested (honestly) to hear about these millions of other ways that don't involve any element at all of domination, submission or power play. But as I said to Bluntness earlier, this encompasses so much more than the whips-and-chains stuff.