I definitely hope this doesn't come across as "what took you so long?", because you're probably going to get a few of those, but I would appreciate it if you could give some thought to, and answer, "what did Twitter have that Mastodon lacks, that kept you going there?".
It could be as simple as "switching is a pain", or "not enough cat videos" (which is what keeps one of my friends on insta).
Because if it's things we can fix, they're worth knowing.