I remember when CoT portals would chug out a near unlimited number of demons...and they gave experience. The Orenbega portal room wasn't something to be avoided by my godly Invuln tank...it was something to be harvested for insane xp!
I remember my tank being on a team of 8 (good friends) and watching them all get butchered by the 5th (remember them?) and being the last man standing...then taking down every one of those Column punks.
I remember that same tank coming across a forgotten Rikti portal that had summoned up 80 or so Rikti...and dropping into the middle of them (and taking them all down) just to show a friend how much fun tanking really was.
I remember when hitting 50 actually meant something beyond: "What am I gonna roll up now?"
I remember rerolling a character five or six times, just to get the costume right. (Icon was still just a dream.)
I remember clicking Unyielding Stance, then watching all the foes just run past me...
The thing I miss most, though, aren't the old power levels, pre-ED. I miss the people...
And I miss being able to go into Atlas and NOT having lag issues due to ninety people hanging out under the statue for a costume contest.
Oh! And I remember when you could actually get the name you wanted the first (or maybe second) time.
Man, I'm feeling the creaky bones, too. Old age...feh!