Sports betting is the only gambling where you can use your skills and your knowledge. I know odd things happen, but if you know a lot about a specific sport and you have knowledge, you are going to shine in your sports betting. But the rest of the types of gambling, like poker, dice games, and slots, mostly depend on your luck. You can place bets on sports in the middle of the match while you can predict the outcome of a match.
This is one of the reasons why more mature people love sports betting over other types of gambling. Sometimes, a favorite team can lose a match against a weak team. But that happens in every sport, and it actually makes sports betting more interesting.
Luck have it own place since one can not tell what happened in during the game, because with just a little mistake a team could either lose a game no matter how strong their are so with you accurate analysis one can still lose a game if luck is not on your side, that is the reason why we say football is a mixture of both luck and skills.
Back to sport betting popularity as that basic point for this discussion, making and winning sport betting games is quite easy as have already stated and even a newbie can make a prediction and if luck be on his side he could possibly win so sport become most popular among football fans as gambling means.