I do whatever the at the time current lover lover requests I do with my hair down-there, it's just hair, I don't really care, I just want to please so the time in bed will be as enjoyable as possible. I'm not a selfish lover, the selfishness I can save till I'm on my own jacking off!
*LOL*
On a woman, well there I'd like as free access to the clit as possible, without sneezing and spitting because of tickling hairs. I guess it's a bit of trial and error. If I find it being a bit too much bush, I just request it to be a little less down-there the next time. It's like eating food. Taste before deciding if you need any spices or toppings.