Personally I like men with hair. Trimmed is appreciated but hair is better than stubble. It's hard to get the boys perfectly smooth and anything less can be rough on a girls sensitive skin. Also, when theres an SO in the picture, I'd much prefer keeping it au natural to lessen any chance of suspicion.
I'd never given it a thought till a providers website in Vegas mentioned she expects her gents to shave their balls. So I gave it a shot. Seems I get a lot more attention down there than I did before. It feels nice to. I've also taken to keeping the cabbage patch up top a little thinner. Besides its not sexy watching a gal pull a pube out from between her teeth. Downside is the itch the next few days. But being an older guy people don't freak when I'm scratching the boys. Just follow it up with a good spit and they'll turn their heads away.