The IOC finally determined that Chicago wasn't a good fit for the Olympics/Paralympics and I for one, am happy they made the choice of Rio de Janeiro.
South America has never hosted a Olympic games and in fairness they should share some of the burdens, as well as the glory of being selected a host.
The games are a massive tax on resources, construction, housing and traffic just to name a few and Chicago already has their own problems. I'm sure the majority of Chicago's citizens are better of than Rio's but I'm still glad that the games are out of the U.S.