LOTRO is a really great MMO in the sense that it's probably the best of the WoW clones
sort of the second gen of MMOs, where if we think of the first gen where progression was based on grinding on action (UO-SWG skill repetition; EQ-DAOC-FF11 mob camp repitition), then second gen is where progression is based on achievements (or mostly quests a la WoW, LOTRO, WAR, FF14, etc)
game was probably the only other MMO made that could compete with the world art direction of WoW... The Shire in particular was beautifully crafted.
and it probably has had the best 'role play content' in a MMO. it took some lessons from Anarchy Online or SWG's bars and cantinas, and I guess... UO and WoW's role play items
I think it was the first MMO to let people have a 'cosmetic armor set' over top of there actual 'stats armor set' too.... did AC2 do that? I think LOTRO may have been the first.
which was well because the game got so much more 'role play/flavour' equipment than most other MMOs, and to boot it had a pretty social/role play heavy community... best social/role play community in a MMO imo, and I've played on decent amount of official and unofficial RP servers before (though not a lot cuz I usually went PK/PvP for my 'main' games).
either way the community and socializing, role playing, etc in LOTRO was really great and especially welcoming, natural... in-character wasn't all that strict or forced, people just naturally would hangout and socialize and talk quite a lot of game content (so not heavily IC but not OOC per se either). just, a lot of camaraderie and socializing about content/questing, fitting for LOTR, actually.