It is all about income
Females can't be equal to us males, so we need to buy them things!
At least that's how it used to work
I think it's called chivalry or something. I remember we use to open doors for them as well because, they used to walk right into them.
I tell you, times are changing, just the other day I saw a female open a door all by herself. This wasn't just any door, but one of those glass ones that even befuddles some of us males!