I left Reddit because of mods in certain subs I frequented. It seems like they just decide someone broke a rule and you get banned from several subs at once with no explanation. I never had any warnings or contact with the mod team until after they banned me. I appealed to the platform and was accused of harassment so I deleted my account and never looked back. I was honestly shocked when it happened.
I spent some time Googling and settled on Lemmy because it had a familiar feel to it. I chose Mastodon because of its similarity to the old bird site.
Lemmy isn’t as big as Reddit yet, but I’m confident it will grow with time. I like the concept of the Fediverse and I’m starting to understand how it all fits together.