It's not just esthetics it's also function
The only thing I've noticed is that cut guys often have way less feeling, so they are either forced to fuck way longer (I'm a top, so not a benefit to me, and I can't imagine a bottom that wants it for too long, despite the porn promises) or cannot even get off to blow jobs. Like, three of the cut guys I was with had these issues to varying degrees. They thought it was normal, though, so I just fucked them and let them handle themselves. I prefer getting my partner off, but not if it's a damn struggle.
Not one of us here would stop wanting Tim in either case, though