What purpose do stereotypes serve?

They feed fears and superficial perceptions....So people don't have to think.

It's easier than actually thinking and good for snap judgements.

34 or 78 rpm

None

1) allows the categorization of behavior within a particular group of ppl
2) it separates you from them,
3) it makes something funny.

I'm not sure there'd be anyone alive if there were no stereotypes

Way better than monotone.

its good marketing