New Experience

So Here is an interesting thought, so before I never had the thought of ever doing anal stuffs with a female (me to her just making that clear) but now that i think about it I wouldn't mind like in the end i want to be able to please a female any way i can I just don't understand the whole pleasure bit out of it like I would look it up but it makes no sense to me still plus I dunno if I would hurt her that is the one thing i don't wanna do... like i don't know if my dick is like sooo big that it would hurt her but like at the same time you all can tell me. What is it about anal that is so great?