Surely though you women know when you're due a period based on when you last had one? At least roughly speaking, so surely you don't have to carry lady things around all the damn time?

As a man, the whole "do I need a bag?" is resolved quite simply by asking myself how long I'm going and where to, what I've gotta carry. If it's out to a club hell no, is it warm enough to forget my jacket? If so that'll get ditched too. I went out clubbing the other night I had my phone, my key, my wallet (which carried a condom or two incase I met a girl and was lucky enough to get invited back to hers or if one of my housemates did) job done. I only carry a bag if I have to like take lunch in to work, carry clean/dirty work laundry in to work, am taking a book or my ds somewhere, will be at that destination for more than 24 hours.