All vices have their risks. And they can all turn out to be detrimental to your physical, mental and emotional health. That is why they're called vices.
My favorite vice is t-baggin' drunken women. Am I going to stop doing what I enjoy, because of the "risk" that one day one of those women will wake up, mid t-bag, and take a chunk out of my sack? NO!
"To each his own."
EDIT: My apologies from derailing this epic thread, slightly. Please continue with the assumptions on the future of our failing world.