I like basketball since it is my favorite sports. I also get along with basketball data and players info since it interest me. So I guess this is the reason why I'd rather have basketball bet than any other games in the sportsbook. There is better possibility for me to predict the right odds and team.
This shows that there is no definitive most profitable sport. There may be sports like football which are often bet on because people are interested and they are popular, but the more a person knows about a sport the more accurate their bets will be, which is why I tend to take an interest on a variety of different sports' betting as I am not more interested in one sport than another particularly.