From reading this thread, I think all bar one post was very serious, and illustrated valid points.

I think people end up in very different scenario's, while I agree entirely everything is a choice, I think it is perfectly reasonable for these choices to be outlined at the start of a relationship, before a collaring. Having said this however the vast majority here practise safe words, giving the sub that element of choice as long as that safe word is respected by the dominant.

Personally I think the OP brought up a very valid point, and is actually something that a lot of subs do end up doing what they are told because they don't know they have a choice.