@LabSpokane @ai6yr Actually, #Calckey is a fork of #Misskey, which predates Mastodon by two years.
The *key apps, as they are known, are the 2nd largest platform on the Fediverse.
And no, there isn't "one good thing" on the Fediverse -- there are many. That's the point of the Fediverse. Mastodon is but one portion of this.
If Mastodon works for you, great. But some people would prefer a different UI, or to have different features, or to interact with a different culture.