The guy I was vs the guy I am now
Used to be that guy who went out with friends every weekend, stayed up till 2 AM, didn't care what time I woke up. Now I'm excited about a 8 PM bedtime and I'm googling how to get grass stains out of soccer uniforms at 11 PM. Do I miss the freedom sometimes? Yeah. But last week my son told me I was his hero because I helped him build a fort in the living room and honestly that beat any night out ever could. I'm a different person now and I'm actually okay with that.
Wait till you realize that falling asleep at 9:30pm on a Friday is the most relaxing thing ever. I used to think guys who talked about getting pumped for an early bedtime were lame. Now I'm that guy and I regret nothing. The 2am nights are still fun sometimes but man they hit different when you've got a kid depending on you.