The analogy I can think of goes back to my early years growing up.   Me to my folks; "everyone is going...or, Mikey has one...or it's the cool thing to have...or, now in adulthood to my self "I can afford it so I want it".  Just because I can have something does not mean it's a good idea to have something.

I don't know the solution to all of the mass killings, but I know we as a society need to do something....and do it soon.