It's never for fun and excitement for me. I have a few people in my circle who make a living from sports bets. I follow their path and try to make my own. The aim is always make more money, it's all about the money. When you make money fun, and excitement also come with it, like in the same package.
The sports betting will not give more fun if you want real fun in gambling then play casino games. These games are unpredictable, and it will give instant result. So you will get more excitement and entertainment. Finally you will get frustration also because in casino games the winning percentage is less. My aim in gambling to get fun and if possible make some pocket money.