No people did not think of it to exclude others and to make them feel bad.
It is more of a sub-concious thing. When somebody or a group of people sees somethihng that isn't 'normal' in their eyes it's evil and they must evacuate it before someone else dicides to be original. It's a vicious loop-de-loop.
I also belive that parents especially want to 'protect' their children and sheild their precious little eyes from reality. Then they grow up to dispise originality and divercity.
So thanx for responding, I hope I have covered everything you need to know.