The 2021 Congressional testimony of the Facebook whistle blower drove me to try out Mastodon. Elon Musk buying and ruining Twitter convinced me to stay on Mastodon and to learn more about the Fediverse. Reddit API changes shuttered Bacon Reader; that was the only way I got on Reddit and that's how I found this place. Hadn't even heard of Lemmy or Kbin until Reddit started messing around with their modmins and API.
I still go to Reddit when Google results lead me there, but I haven't downloaded their app and have no plans to do so. Still cross posting between Facebook and Mastodon, but have completely left ~~Twitter~~ X and haven't looked back.