Just got home from work, saw this thread had expanded, even producing some good debate! For the record, I definitely find it inspiring when I see anybody out there our age still pounding the pavement, still looking to bust out at a race. Time isn't that important from my perspective; effort is. That, to me, is the beauty of masters. It's kind of like when you go back to your 20th High School reunion (unlike your 10th), and you discover that everyone's just happy to see you - that they're no longer competing against you ... Everyone's been through their own version of crap, everyone has had the snot kicked out of them one way or another, everyone's just glad to have made it through - and glad that you made it through too.
That's how I feel about all my masters peers.
As for what I ran in my 20's and 30's ... Well, as has already been pointed out, I took off all but 4 months of my 30's to drink exorbitant amounts of liquor and smoke cigarettes. For the 4 months before I turned 35, I ran, recording a 3:52 1500 and a 14:49 5000.
My 20's included about 5 hard years of training/racing alternating with another 5 hard years of smoking, drinking, and doing non-performance enhancing drugs. In my middle 20's, I owned a club in the Virgin Islands and just about killed myself with substance abuse almost every single day of the week. When I was sober, I never trained long enough to score any great times, though I did hit a 5:09 2K (probably the best indicator of what I was able to do when I set my mind to it), a 3:48.00 1500, a 30:05 10K on the roads, and set a number of records on various cross-country courses (many in WA) - for some reason, I always had an easier time not-partying in the summer, leading to good x-country seasons. I also ran a 1:19 600 in a workout after smoking and drinking all night - I remember, because I did the workout with Tony Young, who ran a 1:17!
My favorite memory of running (from my youth) is the summer I spent in Santa Barbara, running 100 miles a week through the SB hills with high school teammate, lifelong friend, and current Club teammate Andy Diconti (who won the CA state title in the 3200 as a HS senior!).
Okay, that's more than enough from me. Besides, I have to get out the door for a run!