It was an even easier decision to buy it at $10 back in the day.
There are some great servers online like VanessaE's and Illuna, to showcase what the game is capable of with some mods.
Mods are easy to install, in recent versions, directly through an in-game UI.
You can't improve on perfection.
Mojang has 76 employees as of 2016.
And there are absolutely endless numbers of games that are influenced by Minecraft's mechanics, Stardew Valley, Stationeers, Ark: Survival Evolved to name just a few.