When I first began photography virtually all models had pubic
hair. There were,however, specialist magazines for people who
liked shaven women. Nowadays you would be hard pressed to find
women with pubic hair apart from those with the thin landing strip
for that Hitlerian look.
When I have asked women why they shave the popular answer is that
it is more hygenic. I wonder how women have managed all these
millenia without being wiped out by these hair-borne diseases.
Crabs must be suffering a dip in population though.