As a 13yr old the dungeon thing was it...go into the dungeon, kill things, get treasure, power up...rinse repeat. As a 37yr old I would actually rather watch paint dry than play that way any longer.
At 37yrs old I am an much better game master than I ever was as a younger person, not because I am better at memorizing rules, I'm not. I am a much better storyteller, I can make more believable NPCs, my pacing is better and honestly my imagination is better insofar as I can say its more holistic...the parts all work together as part of a whole as opposed to a cluster of creative yet disjointed ideas.
I see it like this. When I was 13 I thought that some pretty dumb movies were cool (I can recall some Steven Segal and Jean Claude Van Dam flicks) and they were when I was 13 or 14 years old. Now I can appreciate that I enjoyed them then, but honestly, even though I can get a good laugh and watch films like that again from time to time, I couldn't watch movies like that more than very rarely without getting bored. Same with gaming. Tastes change as we mature and that is how it should be.
I may be an old DM, but if Old School is dungeon crawls with Erol Otis covers then count me as not Old School. If old school is character and story mattering more than kewl powers and endless tactical combats then I am old school. It all depends on one's definition.
Also, gaming was more of an escape when I was a kid, it isn't an escape anymore. As a game master I get to be creative and that is, for me, what its about. Drama, depth, complexity...all the things that real life is...this is reflected in my games. As an adult I embrace the things that were too overwhelming to deal with as a child. The things that make "real life" interesting are the things that make good gaming plots interesting...they always ultimately reflect some aspect of the human condition and connect us to the characters and the challenges they face.
Wyrmshadows