Seconding this. I originally came from lemmy.world, but eventually mained on lemm.ee after some really bad downtime issues around July/August 2023.

I also keep accounts on other instances as a backup, but I sort of use them as separating different interests, like my lemmy.dbzer0 account is for the tech-related interests, while this one is the more general one. If ever I follow more anime-related communities, I might make one on an anime-centric instance.