All true, but as history has shown, a percentage of people tend to fall into a trap of abusing things and I do wonder if legalise something like cannabis would just become another one of those things where it's used to escape reality. Heck, thinking about it, if alcohol was only just discovered, I can't see it being legal. Abused, it's far more dangerous than cannabis.
Escapism is fine of course, but there does become a point where it becomes dangerous - yes, even in games.