runescape has its strange form of fun but it's not an "MMO" the same way you're probably used to if you never play it, modern runescape is kinda ass but you can still find nice private servers
or just hop on modern if you don't care too much and wanna mine coal for hours while watching some asshole beat a goblin fifty times over and maybe some limited human communication
WOW is much more fun imo, but that kinda got stinky too, also you gotta pay for it and that's just the peak of AIDS so again, find a nice oldschool style private server
Turtle is pretty sweet