But a much easier argument against sports betting is that it ruins the sports. Players throw. They get good at subtly cheating. The gambling apparatus latches itself to the sport, to the teams and players, the umpires and judges, the sporting organizations. With this much money on the line, it's not a matter of if but when games are thrown, cheated -- the bigger the game, the bigger the incentive. It's even easier now because of the amount of side/parlay betting that is available. It exhausts the spirit of competition.
Sports gambling is diametrically opposed to sport itself.
But the solution is not forbidding them, but educating people and families on how to deal with them.
Alcohol consumption is even more dangerous than sport betting, however several cultures after generations have been able to develop a healthy relationship towards its consumption. You can clearly see that by comparing deaths in Mediterranean countries against other northern countries or other parts of the world.
I can feel that difference also directly in the way my Mediterranean cultural background has driven my relationship with alcohol. Me and my family love to drink wine or beer, but we despise getting drunk. The moment our heads get light headed we stop drinking. We enjoy the social aspect of it and its flavor, but we do not enjoy being incapacitated because of it. However the moment I started traveling north I noticed the difference in how people relate to alcohol:in a lot of cultures people just drink alcohol to get drunk or to disconnect from their every day lives. They have not learnt to stop on time and they develop a very unhealthy relationship to drinking.
Same could be said about sports betting. If it’s part of our culture or our individual interests we need as a society to be able to develop a healthy relationship towards it and not forbid it (with the exception of minors).