This is why I stopped playing ARAM after more than 2k games
Today I wanted to play some ARAM because I felt like it.
First game attempt. The opposing teams are balanced. It looks like it's going to be a fair game. We get the first tower, but then one of my teammates disconnects for a while and when he comes back he's still lagging and walks into the enemy team, dying again. We lose 2 towers and the inhibitor and are ultimately unable to recover from that.
Second game attempt: failed. I had to wait a couple of minutes to find a game. We had a good team comp, but someone in the enemy team left the game.
Third game attempt: same as game attempt #2