Yes, yes, yes. All that, taboo, being dominated, naughty, only really, really naughty girls do 'that'. Some of the things that make sex and anal so very hot.
But it also has a lot to do with how we are built.
There is so much more to our clitorus than, em, meets the eye. Besides being the only human organ whose sole purpose is to provide pleasure, it's 8000 nerve endings spread far into to our insides.
Wikipedia -clitorus (copy & paste)
. Penile-anal penetration may also indirectly stimulate the clitoris, either by the shared sensory nerves (especially the pudendal nerve, which gives off the inferior anal nerves and divides into two terminal branches: the perineal nerve and the dorsal nerve of the clitoris) or by the crura ("legs").[50] (end)
If you have not tried anal, please do. You are missing out on half the pleasure you could have.