I haven't checked a bag in years. It's a stressor, takes forever, and can get lost sometimes.
If I traveled with a woman who only brought a backpack like I do, that would be a colossal turn-on.
And ladies can fit more clothes in a bag, because they're smaller.
.
I don't have to take time packing, don't have to wait in that line, don't have to worry about it winding up in Albuquerque, don't have to go to baggage claim, etc.
It's a choice.