Pubic hair protects against naturally occurring STI's if you left your vag flapping in the wind... which we no longer do since the caveman days. If it is sexually transmitted, pubic hair doesnt do shiiiit to prevent it... which, by the way, is what a porn game is all about.
Vaginal hygiene might no be on display or as obvious as other things, but we knew enough girls in high school that you could SMELL were not hygienic there and it was more than obvious. Pubic hair traps both bacteria and smells. Sex, which thew gamje is aboutr, being a prevalent social interaction, Id say.
The ONLY point you made that was somewhat true was the increase in fiule size, which wouldnt impact the game size by much at all and for some who cant stand vagfros, and armpit hair and the like, would gladly sacrifice a GB or two (which is really reaching) to have a nice clean shave or trim. So I stand by my previous point. In my opinion, The game really needs a "hairy" tag or an option to toggle off.