Really...come on dude. Never? Seriously?
Seriously, never. I'm only 26, but still. My son was born 4 months before I turned 22. I wasn't really "with" his mother when he was born, relationship wise. She was just a chick I laid a couple of times and had no intention of having a "relationship" with her, and we really didn't get along anyways. But still, it was my kid, so we get along for him just fine. But anyways, back then I was working a shitload of hours so any days I had off I always got him. Its still that way, except I don't work a shitload of hours anymore. My job now lets me spend a shitload of time with him, and we don't go thru the courts for custody or child support or anything, so that really helps. I would rather see my son, wife, etc, than go to a football game.
Plus, now my wife and I have adopted her 3 year old cousin. So, between kids, family, work, fire department, etc, going to a football game isn't really a priority on my list. I've had a few opportunities to go, but I just haven't. I just never really make much time to go do stuff like that.