I turned 20 this august, and I played since vanilla!
(If you don't believe me check my armory, I has a certain staff most priests covet :P) Makes me get the giggles when I remember how young I was getting this
I raided some of MC, I remember ALOT of ZG and I did AQ20. At the time I was very young so I was never part of some "ultra hard core jamazing core group! but I was in a few decent guilds, courtesy of my older brother
(yay Laggerspine, I mean Daggerspine) :P
From what I remember and did experience, was very hands on and demanding, lots of coordination and the slightest mistake created wipes, lots of trouble on High Priest Jeklik and the tiger boss too ^^
TBC was more up my street, I was older, I was able to raid more, I did Kara, Gruul, Maggy, SSC, TK, a minority of BT and Sunwell. Didn't raid so much "end" content, again young age is a limiting factor in top guilds and were never trustworthy of young un's, but I did experience some bosses through pugs when it was "current".
From what I remember, I thoroughly enjoyed raiding every raid day, had loads of fun, the people were amazing and I progressed. These days I find I absolutley detest raids, its boring, its uncoordinated, the people have lax attitudes and attendance and punctuality is just not the same anymore
I miss vanilla and tbc times, truly the highlight of WoW!