Parkour/Freerunning, is the only sport in my opinion fit for inclusion in the Olympics.
Generally athletes that don't get paid very much, doing their sport (which is pretty immense to watch), competing for Olympic Gold, part of the Olympics Ethos I believe.
Rugby, Golf & Cricket should never be in the Olympics. Basketball shouldn't either, I'd only accept it if it was amateur Basketball, not multi-millionaire NBA players. Same with Football too. Footballers on £200,000 a week shouldn't have a place in the Olympics. Baseball shouldn't of been in the Olympics either to be honest, although I think Softball should make a return.
Amateur Boxing is fine by me, but Professional Boxing? Like with Football, Baseball, Professional Basketball, Cricket, Golf or Rugby, should have never been in the Olympics unless they were Amateurs only. It's against the Olympic ethos, in my opinion.