I personally love going down on my wife. I have finally got her to clear the forest and now she says oral feels so much better. My wife has not been a fan until recently, when she removed 90% of the hair.
My favorite thing is probably the taste. Second would be, it excites me to do things that aren't normal. I like to look at a strangers face and imagine them sucking cock or eating pussy. its hard to imagine, so for me to know that my face is in a not so normal place is a turn on.
The part that arouses me more than anything is, this is the only way i can get her to moan, or roll her hips. I like it when she adjusts to make it feel better.
Our hardest part is my wife is not vocal. and this is hard cause i am not sure exactly what feels good. so if she is moaning or moving around that is a good sign. I wish she would be just tell me a little left or right.
oh well still training her though.