At the risk of sounding old fashioned, why do lots of people, not just the young, act totally oblivious to the feelings and needs of others? It's all about Number One. One example is I sometimes see drivers in parking lots zoom in front of disabled, pregnant and or elderly people even in the worst weather.
Discourtesy is rampant among cell phone users, many drivers and others who disregard safety (and laws about yielding to pedestrians) as well as courtesy.
I"m not referring to outmoded, old fashioned customs, just the golden rule treat others the way you'd like to be treated.