I thought the moment when I would quit league would be a big thing but...
... when I thought about maybe trying a single match just to try things out yesterday I realized I had the game unistalled already weeks ago, and looking at my matches the last one was several months ago. Guess I already quit league without knowing, but I'm also kinda not motivated enough for a re-install right now.
But hey, at least no one's gonna miss me - my friendlist has been offline to 95% for months now anyways so... at least that's not a problem.