Why did we get another diablo 3?

Omg so u beat d3 on normal and stopped playing lol rofl. Dude d3 campaign is useless u donit the first time but after that you do bounties, rifts to greater rifts. Thats the end game in d3 not the campaign.

In d2 u beat the game at every level but its chaos and baal runs to level. U do meph runs to gear your character.