I couldn't care less about the Olympics either. I had a brief mild conversion during the 2012 Olympics, purely because I was fascinated by the effect it had on the UK hosting the games here. All bad news was banished from news channels, and it made a real difference. People in London using public transport actually started talking to each other, apparently. But once the Olympics was over, normal service was resumed.
I don't really care about any sport, to be honest. Just doesn't interest me. In relative terms, tennis isn't so bad, but I absolutely loathe football and especially golf.