The only thing worse than "he/she" is "s/he."
I like s/he because it is 2 less key strokes, and when you do a lot of typing those key strokes add up, why don't you like it? As far as usage goes I've always thought of them as comparable. Six of one, half dozen of the other, both a bother.
Marsha
Actually, I find that it is used in things that are deliberately PC, like parenting articles that denounce "gender roles." That is why it grates my nerves.