Minecraft isn't a good game, what it is is about five mediocre games in one package:
-A sandbox building game
-A survival game
-A platform for multiplayer minigames on servers like hypixel
-A technical automation game like factorio
-A social hangout space like secondlife
It's not the best at any of these things, but it's the only game that has all of them in one place, which everyone is already familiar with.