Yes, I have. The only person I knew in college that possessed that kind of mentality didn't even make it through the first year before dropping out. He was barely old enough to buy beer legally.
I also spent several years in the military, which is where the term "party hard" probably originated from. I'm not unfamiliar with people wanting to party.
This just doesn't add up. This man isn't some wet behind the ears 21 year old that just became old enough to buy beer last week. He's a middle aged man who looks like he's old enough to have kids either in high school or college. It sounds like a duck, looks like a duck, smells like a duck, and acts like a duck. My guess is, it's a duck.
I know there are exceptions to every rule. But most people settle down and begin to act more responsible as they get older. For this middle age man to behave this way, it's unusual compared to the norm, hence, it's strange.