.. unless you have small hands?

Whats the appeal of skinny grips over big fast cushy ones?
I know there must be a reason, I just don't know it

Apparently you get more feel

because small grips are more comfortable, weigh less etc. pad glove or pad bar.

My fat grips are more comfortable? (I have XXL size hands apparantly though, going by my golves that is)

Personal choice. I've got reasonably large hands and prefer a smaller grip.

prefer small, fat grips get in the way. prefer gloves with no padding as well

You don't have to have particularly small hands for smaller grips to feel more comfortable.