A trim now and then is OK, but completely shaven pubic hair on a grown man looks ridiculous if he has other body hair. No body hair at all on a grown man looks just plain creepy and unnatural. It may be de rigeur for bodybuilders and models, but both those fields have their seamy sides.
PERB members are a very small subset of the general population. Male members who completely shave their pubic hair are surely a very small subset of that small subset.
I have belonged to gyms and other sports-related clubs for many years, and I have seen thousands of naked men walking around. In all that time, I have NEVER seen a post-pubescent male with no pubic hair at all.