Sure, men/boys can become addicted to porn, and/or video games, and yes it's a problem that can ruin their lives. However it's no different than alcohol or drug addiction. Both types can hinder your social development making you less desirable to the opposite sex, less likely to procreate, etc. The thing is that porn/video games/beer/marijuana all are perfectly healthy in small doses. It's only when it becomes an addiction is there a problem, and there is no reason to think that a porn/video game addiction is any worse for the future of the human race than alcohol/drug addition. So, let's not get too excited here.