The London games are ongoing of course and the city is getting a boost. (Why London would need a boost is another question.) People are having a good time and that’s nice. Having the Olympics is “nice,” but is it “worth it?”
The monetary bill is three times over estimates. The IOC has been dictatorial in controlling its trademarks, nobody much who has not paid the IOC can sell Olympics stuff. Transport is snarled. Security is tight.
All in all, if your nearby metropolis proposed hosting the Olympics, would you be in favor?
Looking at all the hassle, I think I would just let someone else host and watch it on TV.