Girls Sports a Waste of Time?

It has never been clear to me why girls would want to waste their time in any sports activity where they are genetically destined to be also rans...mini men. There are so many other areas of sport (or related) where females can reach the apex (irrespective of gender) of human, potential: music instrumental, equestrian, dance, diving, marksmanship, cold weather endurance, digital dexterity... to name a few. It seems to me that women would be better off celebrating that which is unique to them, rather than trying to emulate that at which they can never be the best.