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.
disagreeing with Reddit policy change, a few years ago. Appreciating Lemmy/Piefed being algorithm-free, and allowing me to filter out whatever content I would consider noise.