I hate non-solo games.
I love the grouping aspect - but I hate it enforced - maybe I've only got 1/2 hour and I want to get to the killing fields, and kill for that 1/2 hour.
AC1 was and maybe still is the only game that allowed this - my defense specced warrior or archer would use his recall last teleport and be in the matron hive to kill 10s of bugs (level6 loot table ones) at a time killing over 100 in 1/2 hour and get decent loot/salvage - or my mage hunts in Valley of Death for also great loot/xp.
Im in WoW at them moment - it's partly soloable after level 60 (its a great game prior to that) - generally takes ~10 minutes to get to a destination so the 1/2 killing isnt possible, but ok if you have an hour to spare to get 45 minutes of killing in - you'll will need another person to hunt the elites farmed in say Tyr's Hand for better loot oportunity.
I left AC about 2 months after WoW was released - I did the migrate to turbine billing but unsubbed after that for WoW. I also would hate to be without decal for autobuffing, loot alerts, arrow crafting amongst others (I understand Decal is now working with last expansion pack)
AC, IMHO, has the best loot generater and that the best loot was available to anyone (not just high end strict choreographed raiders).
Harvestgain server - main charaters (from memory) - Pemulwuy, L140 Mage (War&Critter spec) - Jake the Muss, L110 TankAxe - Canberra, L110, TankBow
I still follow the Harvestgain VNBoards (
http://vnboards.ign.com/Harvestgain/b5154/) to see whats going on (mainly follow my old giuldmates there) and things still seem to be happening albeit with a reduced population (villas are still hot commodity although you'll probably not get much for them on ebay - thats an idea - did a seach on ebay, there's one MT villa for $80 - that's way down from the hey-day, but at least one is still there

)
Maggies is also still alive (
http://www.thejackcat.com/) - nice to know
Sometimes I find it tempting to go back - but then I think of the new Pirates MMORPG and Vanguard looks good .. and in the meantime, I'm liking WoW (mainly because of the great guildies that is TOG rather than the game)
As for Turbine games, alot of AC talent left after their offices moved back and forth between coasts - the other Turbine upcoming titles look very poor (DDO=enforced grouping) as far as I'm concerned.