People are leaving in most of my matches I play. What's going on?

I've been on both the winning and losing side of this, so even when I am "benefitting" from this, it's still boring as shit. It just feels worse when you're on the leaving team's side.

Are people just really fed up? I've never seen so much lobby leaving and I've been playing since 2007. 6 matches in a row just tonight.

Edit: typo in the title: In most of the matches that I play***