As long as there is a healthy balance between spheres, you're basically okay. When gaming starts to become an excess, and its sphere is 'bloated', then the bad aspects of it are going to become apparant. Any drug, type of gambling, rock climbing, fishing, sex, hell - even something as 'innocent' as train collecting can become an unhealthy area of your life if you let it. That's the key here. If You Let It.
Western culture is way overrated.
Sure, America is an important place in world affairs, but look at all the horror inside it. The bottom line, is each individual is responsible for their own actions. Its so easy to say that these evil forces are taking control of our helpless kids. In reality, the only reason these things happen is because we let them. Remove their access to guns.