https://en.wikipedia.org/wiki/Charles_Martin_(American_footb...
Are you kidding? It's a social activity, just like NFL in the days of yore, that people partake in.
Discussions about who's in the next big fight are what's on people's minds, not their criminal background. Sure, issues like domestic abuse and drug consumption will come up in conversations, but I think you're overestimating how many people look up to these guys and gals.
How it plays out in reality is that the money involved looks better to people who have fewer choices. Of course, there will be exceptions. But in a meritocratic society, status is not as derived from violent activity as was true of societies with an honor culture.
I know for a fact that it's possible to develop a deep and abiding love of American football as a player. I presume the same is true of UFC. But the risks will dictate whether or not the money is worth it depending on a persons status.
Edit: nouveau
"Just because I dunk a basketball doesn't mean I should raise your kids." -Charles Barkley