I think a lot of it is simply the human brain has a lot of limitations and we push past them on a daily limit. Our brains are wonderful things that allow us to do a lot but when it comes down to it we are simply not meant to be able to connect to so many people at one time. I think that past a certain point it just breaks a lot of peoples brains to learn about so many terrible things so the brain defaults to finding one thing to blame the problem on.