[zulban]

Leisure is not poison for the brain. It's required. Like anything else, everything in moderation.

[sureglymop]

Exactly. As someone who plays games but doesn't smoke or drink (which are also leisure activities), those are way more socially accepted and probably closer to "poison". But it's okay because as you said, everything in moderation.

[tsunamifury]

Yes and the vast majority of gaming specifically tries to thwart moderation. Thus the poison aspect.