I've been playing for about a year now, started some time last April or something. I'd say I'm a fairly good player; I can play at least 4 champions in all roles (AD carry, AP carry, jungler, support, top laners, etc) and I used to play non-stop a while ago (5-10 games a day). Now I get on to play maybe 1 or 2 games before doing something else.
I never really got into ranked (way too much hostility, immaturity, and foul-mouthed children who scream at you when they don't get what they want). It's not worth it to lose your dignity and take/give abuse to 9 other players for a number.
I mostly just play with friends nowadays, so if there's a group starting up, I'd probably stop in a play a few games.