To me, betting on live sports events is entertainment. I think all of them are the best of all. I don't think it's even hard for you if you're a sports fan. Learning is easy and you're simply putting your money on the team or player you're supporting.
Majority of the gamblers are playing sports, because this is not a full luck based game and it's very challenging as you need to cap or analyze the game before you place your bet, and there are also winners in this kind of gambling which inspires aspirant to be professional gambler.
Another thing is that there are many areas where the information is available to that team so you can evaluate games that make the chance to win strong.
This sis what I am talking that we can analyze.