Markets in general, really. If you banned securities, people would still bet on commodities. Ban that and it's real estate. And in lieu of that? Currencies.

Markets in general, really. If you banned securities, people would still bet on commodities. Ban that and it's real estate. And in lieu of that? Currencies. If you ask me, gambling isn't the problem here; advertising is. Sure, people will always find a way to engage in vices, but something about exploiting our monkey brains to make those vices seem like the be all and end all always seems to have some pretty bad effects on society. Tie all the ills of the 20th century psychology-infused advertising with modern targeted advertising and you have a real disaster on your hands -- just be glad Joe Camel never got to stroll around the social networks of the 21st century.