Owning dogs spreads disease. Owning dogs takes away energy that could be better spent on fostering real human relationships.

Books spread bad ideas, not to mention how women will read romance novels and allow it to give them unrealistic expectations of relationships.

Sports promote injury and death. And accomplish nothing for society.

We can go down this road for awhile. And there's some truth in all of it. Too much of anything, can be bad. Using things in an unhealthy and destructive way can be bad. But humans aren't robots and everyone has some kind of vice. The problem is when that vice becomes all encompassing and an impediment to someone's potential and social contribution.