Began playing back in August, but stopped a week after WotLK came out because of school, although I'm not planning to return to it anytime soon either. I played it quite aggressively until getting to lvl 60 (8-12 hours a day, was still during summer vacations), so I went from 1-60 in about a week and a half. 3x XP is a thing of the Gods. Took me over a month to hit level 70, and for the most part, before 3.0 hit, I PVPed the crap out of it. It was fun.
I was a warlock, after all.
After 3.0 came along and I began getting pwned by level 67 paladins and shittly-geared shadow priests, I decided to pick up raiding, which I did. I had fun, it was all so new to me. But even after the nerf, I failed to get groups good enough to beat Hyjal and Black Temple, which sucks. Me and a rogue friend o' mine slipped into the Sunwell once, and he tried stealthing through the mechanical guards. It was funny as hell seeing him sprint the shit out of it and trying to run away, but getting one-shotted right before the exit.
My bros have two characters, both 65 pally/warrior, which will be converted to holy/prot by the time they hit 80. (We have a group of 5, with 3 of us being pure DPS classes and those two who can be healer/tank, so we should pick up gear pretty quickly once it comes to that.)
Also, I think that the easier instances are a great addition to the game. It's easier to get gear, but it balances out by forcing you to do a heroic at most once per day. That way, with a good group, you can finish all instances in 2-4 hours, which was around what took a medium-geared group to do a run through Sethekk + Shattered Halls. By reducing the time it takes to complete an instance, players can be much more casual than before, when you had to set at least two good hours to do a single run, taking into consideration wipes and everything else.