Because people aren't willing to break tradition.
Why do we waste money on tv studios? Because all work and no play make johnny a dull boy
Just like some people enjoy NASCAR just for the crashes.Doesn't mean we should waste all these resources on gasoline to watch people ride around in a circle for I don't know how many loving hours but I hear NASCAR is so god damn loving long people get so bored the crashes aren't even worth the entertainment.
Why is Kidz Bop still a thing?
Why do we still watch television? It uses our electricity amd we surely arent doing anything productive with it.
Chances are if you have a manned mission to mars it's going to be filled with doctors and medical gear. They aren't going to send people to mars with no medical help.So chances are you'd literally be safer in a space ship to mars because you'll have multiple doctors on staff within arms length from you.Response time is faster than an ambulance driving all the way to the olympics.
A manned mars mission wouldn't yield jack stuff for the human race. At least the olympics provide entertainment