Someone understands Me now!

Just pretend Me is lowercase

But papers do suffocate students x_x

But paper could represent knowledge, and knowledge beats everything

*finally
Grammar Unicorn attacks *^*

They should make a movie about paper that comes to life and attacks people.

Its just a simple game

It's because paper represents the written word, knowledge while rock represents physical strength.
Brains over brawn.
Mind over matter.
The other two win because in the real world this would be what would happen but paper beating rock is in a completely different ball park.
Paper wins metaphorically. It has a deeper meaning than just worldly matters. That's why.

I thought everyone thought this

It should be like Club Penguin. They have their own version of Rock Paper Scissors. And then they become ninjas.
Water Fire Ice.
Childish, but valid.

Cowboys (shoot) Indians. Indians (hunt) bears. Bears (eat) cowboys.

Papercut. And her, side kick, lemon juice.