One way i appreciate giving it is by thinking that it is a very private and vulnerable part of themselves that i have been given access to. Its more intimate than normal sex, you have to go face to face with it and talk to it, and then be nice to it with your tongue. It's sort of like meeting an entirely different side to your partner, their dark side if you will. Then you get to come to terms with it and get along with it and finally love it, seperate to, but also in conjunction with the human it is attached to.

I hope this helps.