On Reddit, you can say things that would be normal anywhere else, but make a small group of terminally-online individuals very upset. Something as simple as asking 1 question in 1 subreddit. That's how I got my first ban. It's what made me completely apathetic to reddit.
The other bans were my fault (as in, I knew it was likely at that point) but I was apathetic at that point. Still, I appealed because they were silly bans, and my account was reinstated each time.