I agree, that it's not gaming itself that is destructive, but rather a mindset that allows oneself to wallow in destructive tendencies.
You can become addicted to all sorts of things: drugs, alcohol, video games, video poker, gambling, porn, online forums, *winks*
It's the amount of time you spend doing it and the ability to sink into a self-soothing behavior that determines whether or not it's unhealthy.