The way you're asking this question is partially sexist. I get what you're saying as in, "Should women BE ABLE to wear pants and shorts more often? " Wording it how you did is like saying, "I want you to wear pants and shorts because it gives me pleasure. " But I think women should be able to.
I'm totally fine with skirts and dresses for woman but personally, I'm more attracted to girls wearing pants or shorts (don't ask why) plus I just have to say that I think leggings are more attractive than skirts in my personal opinion so why not, We live in a democracy so green light to anyone who agrees or disagrees?