I sometimes wear women's deodorant when I'm out of men's or women's perfume when I'm out of cologne.
Why would you choose to do that?
It feels good to wear women's perfume sometimes.
I think the difference between men's and women's fragrances is largely artificial.  You should feel free to wear whatever kind you want!
I guess I could but the cost is different between them. People think I'm gay and so maybe it is better if I wear those based on my gender.
Gender separating regarding men and women's products seems to be wrong. Some might even categorize it as sexist, so I would not worry about it if I were you.