I always have. Anal eroticism generally really. I don't exactly know why although think it's a nerve-ending thing and the way it feels so good. But the whole thing still seems to me very taboo especially for a woman to say she really enjoys.
My husband indulges me but it's not something I'd mention even to my best friend and I hesitated quite a bit before writing this. We still do mostly PIV but anal is something I'd miss if we didn't do it at least sometimes.
There, I've said it!