They ruin cities in which they are held. Often times people are forced to move to make room for venues that are never to be used again. The athletes are not well compensated and if they do not give a perfect performance could face financial ruin for representing their country. There is an unneeded burden put on the local environment and is just a major scam at this point. Most people don't even care anymore, which is evident in the viewership of the 2020 Olympics being dropped by half of that of 2016. So yeah, I'll don't give a shit where the Olympics are.