Well, one answer could be: if we as a society look at this and decide that it does more harm than good, why allow it at all? There are many other forms of enter

Well, one answer could be: if we as a society look at this and decide that it does more harm than good, why allow it at all? There are many other forms of entertainment available, so what is lost by eliminating this easy-to-abuse choice? It's similar to the reasons we chose to eliminate certain classes of drugs. They cause significantly more harm than good, so what is lost by limiting the ability to produce and sell them is less important. Of course, there are often problems with the way such bans are enforced (the disastrous effects of the war on drugs, or prohibition before it, are hard to overstate). But that doesn't mean that there aren't workable ways to regulate such things without being so vicious to the victims (as can be seen in the much more successful bans on the sale of many other substances, such as non-addictive prescription medications or weapons-grade chemicals).