It hardly matters that most people prefre -- or, more likely through what is current, merely say they prefer -- shaven.
There must be a sizeable minority of those who prefer unshaben, otherwise porn that caters for this taste wouldn't exist.
I appreciate the hygeine angle, but that's akin to the debate about cycle hemlets.
[Research shows that wearing a helmet actually makes you more likely to suffer serious injury in a road traffic accident -- because helmet-wearers are bolder in traffic and cars/lorries give such cyclists less leeway when they pass 'em.]
Given that pubic hair is 'designed' to disseminate the scent of its owner, then it also retains odours from the sexual activity of both parties. Therefore, having pubic hair might encourage wgs to properly shower between clients so as not to put them off!