I don't believe that your age defines you, or really says that much about you at all. I know plenty of 40-year-olds who are in better shape than most guys in their 20s. I know guys in their 50s who party harder now than I ever have.
And then there's me. I'm 28, and I'm done. Old, over the hill, finished. College is still fresh enough in my mind that I consider myself a younger person. I'm not married, no kids (or pets) so I'm certainly free to do whatever I want whenever I want. And I do just that. But what I want these days is more likely to go to bed by 10pm. Sure, I may stay up until midnight every now and then, but considering the latest I've been up in months was when I worked until 1am the other day, I can say with certainty that I'm an old man.
Case in point, last night. I have the opportunity to go to a fun concert with friends at 9pm (until 10 or 11pm). So going out until 11pm on a Thursday? Sounds pretty reasonable. I'm totally in and planning on going, until I realize I missed my ride. At this point (9pm), I can still bike home and go out for a while, but nope, I decide that it's too late to go out and off to bed for me!
Next sign, this morning. I'm driving to work this morning at about 6am. I see a group of about 5 high-school-aged kids walking up the alleys in my neighborhood. Due to the recent graffiti and thefts in the alleys of my neighborhood, I decide the prudent thing to do is call the police and have them make sure all is kosher. Calling the cops on kids? Who am I, my dad????
And let's not even talk about weekends. I used to use my early morning running on weekends as the reason/excuse why I didn't like to stay out past 11pm on a Fri/Sat night. I'll admit right here right now, that really, I just like going to bed then.
But here's the thing. Anyone who knows me knows that I'm probably the most over-scheduled, busiest person they know. I am ALWAYS up for anything and love going out. But I'd rather hit the town at 8pm so I can be home by the time most are just going out. And my preferred hangout time? Breakfast. So next time you want to hang out with me, schedule a breakfast at French Meadow Bakery or Victor's 1959 Cafe. You may go to the Uptown Diner at 3 am after bar close, but I'll be there at 6am on a full night's sleep!