no, not at all
no it is not
yes they will.
My girlfriend does
No, guys are not supposed to shave their pubic hair...in fact no one is supposed to shave their pubic hair. We have pubic hair for a reason and shaving is not healthy as it risks irritation, ingrown hairs, damaged skin, infected ingrown hairs, cysts, and increases risk of some STD's.
Its not absolutely necessary to shave pubic hair but girls do it to maintain good hygiene.
Your pubic hairs grow thicker when you shave. But when you trim it grows out how it usually does.
Always shave them, at lease twice a week.