Though I can't say why, its something I enjoy - both as dominant and submissive. My wife isn't thrilled by it so we don't play that way much. I;m usually good at self-analysis, but in this case I can't figure out why I find it exciting - especially since I like both sides. I tend to like forced-sex type fantasies, more than pain or dominance, and I completely dislike any sort of humiliation / degradation scenarios. (though others are free to enjoy any kinks they wish).
This is claimed to be a pretty common fantasy, but I don't know how many people want to or get to act on it.
Just to be clear here I'm talking about forced sex play between consenting partners, not actual forced sex or real rape which are a completely different thing.

Comment