Most of the younger guys (18 to 30) have a tendency to trim and shave at the gym here, and the older seem to be going longer!!
I use to let it grow natural and not trimming at all, but have found that I like it trimmed due to not being circumcised!! If I let it grow longer the hair gets caught in my foreskin when wearing briefs and its tough to take a piss with hair all tangled up in my foreskin when I try to skin back my long foreskin before pissing, or otherwise as most uncut guys know you might piss on the guy standing at the next urinal or down your leg!!
I had a chance to see myself shaved a few times, I had hernia surgery and when they prepped me for surgery the first thing they done was shave all my pubic hair off along with shaved my nuts!! It itched so bad as it grew back, I thought I would go mad till it grew out a ways!! Then I had some stents put in and they shaved me again, this time it was from my neck down to and including my balls. I asked why the hell do you want to shave me everywhere? They said that if they got in trouble getting the stents in or something went wrong and they had to go for open heart surgery they wouldn't have time to shave me to open my chest!! I am quite hairy chested and I really hated to take my shirt off for a long time due to my chest was bare as a babies butt!! However I now trim my chest very little, trim my pubic hair some and shave my balls!! Wife does like to suck my balls and wants them hairless for the obvious reasons.. I love seeing guys with nicely trimmed pubes and chest hair and shaved cock shaft and balls!!