Victoria railway station!!

Why do people walk around with earplugs in and using mobile phones , quite oblivious of anyone walking in their PATH!!! I was taught you looked out for ANYONE older than you, but it amazes me that no one seems to care and if you don't want to get knocked down then you scramble out of the way no matter how difficult it may be for you, oh well that's the way of the world and not always the better for it!!