I liked 3E fine.
It was frustrating to DM at the extreme low end (PCs were less survivable, and yet a lot of effort goes into building one) and the high end of the game (save-or-die effects were rampant), and things like grapples and monster stat blocks were just a bit nutsy for a DM to manage, but I managed the hell out of them. I like designing stuff, and I liked how D&D3 worked in nearly all other aspects. I liked the skill system introduced in D&D3, and the only thing I decided later that I didnt like was there were too many skill points to assign every level. So it's like you put a point here, and a point there, and half point there.. what? Yeah, a half point.
I actually kinda like extrapolating builds out to whatever level and multiclassing and a lot of stuff that went away. Some people hate that, but I liked it. I could never manage to extrapolate my multiclass ideas out beyond a few levels because I kept changing my mind. I had my Tiefling Bard I hoped to one day convert to a Shadowdancer. But I kept thinking "just one more level of fighter.. and I can add in a neat feat combo.."
So I never quite got Emeth to Shadowdancer, but I did multiclass the hell out of that bard. He's still one of my favorite characters.
My personal D&D philosophy has always been to turn all the options on and allow everything. I've DM'd for kobold barbarians, necropolitan clerics, elan psions, winged PCs, gnoll marshalls, etc. I don't care. Bring your character, and I will DM. Not everyone shares this philosophy. In fact, in my area, hardly anyone shared it.
I never got to play the goblin or mongrelman binder I had my heart set on. Most DMs in my immediate groups just disallowed any kind of interesting options. Tome of Magic? Out. non standard races or classes? out. vampiric bloodline? out.
In one campaign, I played an interesting (to me, anyhow) sorcerer build based around illusions and using a scimitar. It wasn't a particular effective character, but to me, I had this sort of Alladin-esque sorcerer running around "summoning" illusionary dragons or casting an illusion of himself fighting, while he went invisible.. disguising myself with my turban of many faces .. or hurling my scimitar with the "whirling blade" spell. Unfortunately, I had to then prove to one of the other players that my character was "useful" because I didn't bother with magic missiles or fireballs. That ended up very frustrating, and I eventually quit that campaign for other reasons.
So I liked 3rd Edition, and played it plenty. But I'm officially running 4th Edition right now. I seem to be DMing 4E between 1 and 3 times a week. Mostly this is LFR, but I'm getting ready to launch a real campaign again soon.
As soon as DDXP is over with...