I joined because Reddit has become a cesspool of bots and toxic behaviour. Lemmy is still completely open-sourced, while Reddit isn’t at all now. Also, when you first sign up on Reddit currently, you get completely ignored now and can’t post or comment on regular subs.
The Reddit APIcolypse of 2023. I came crawling back to Reddit a few weeks ago though. Lemmy doesn’t have the size to support the kind of niches that Reddit has, and Reddit has a much broader user base as well, so conversations are more interesting because I can’t predict what 80% of the responses to any topic will be.