I'm Too Old For This "Stuff"

I am a big fan of How I Met Your Mother (HIMYM), and there is one particular episode that I was thinking off this morning at about 630am. Why was I awake at 630? I'll get to that. In this episode, Ted keeps telling Barney that he's "too old for this 'stuff'" as Barney keeps wanting to do silly things. Ted is basing this off of a movie, I think one of the Die Hard films? Anyway, Barney responds that Ted is just lame and acts too old. They each come up with a list of stereotypical things the other must complete: Ted tells Barney he must dye his hair, pierce his ear, and sleep on a futon, while Barney tells Ted he must eat dinner at 4, take forever to answer the phone, and go to bed early, just to name a few. At the end of the episode, Ted realizes that he has been acting too old and that even though the character in the movie says "I'm to old for this 'stuff,'" he still goes out and does it. Barney comes to the realization that he is too old for some of the stuff, but that he is still awesome. Now to my point. I was up late reading last night/this morning. So late/early that I realized it was getting light out as I was reading. By the time I finished my book it was about 630. What the heck is wrong with me? Why do I stay up and do this to myself? Ugh. I ended up getting about 4.5 hours of sleep, so it wasn't all bad. Still, I think I really am too old for this "stuff." I mean, I'm fine today, but I have a full work week ahead of me, and I know lack of sleep can add up. At the same time, it was kind of fun to realize that I can be a bit of a rebel (ha, right) and still do stupid things every now and then. In any case, I'm going to attempt to go to bed early tonight, and that means not starting a new book and/or putting the book down early. Fingers crossed I can do so!

UPDATE:
I'm a failure and definitely started a new book and stayed up later than I intended. Oops.