I'm still playing Miitopia up to this day.
You can say I'm a completionist when it comes to some games that I really liked and felt worthy enough to beat it 100%. That's why I got all achievements of Sonic Generations, Sonic Lost World, A Hat In Time, etc. And I'm doing my best to get all the medals in Miitopia too.
You may wonder why I want to do that even though I won't even get any reward for doing that. Well, I personally just enjoy the feeling when I see all the accomplished achievements lining up in front of my eyes. It's kind of a quirk, I guess.