Why is is so important games run at 60fps?

[Sherlock99]

highwaystar101 said:

Sherlock99 said:
60 fps makes the game play smooth no slowdowns the game has a clean clear sharp look to it like Mario galaxy mp3 smash bros brawl.

And many other non nintendo games

i know that many other games on different consoles have games that run at 60  fps i only choose these three games as an example.