I realise that this makes me sound about a thousand years old but I think there's been a significant decline in manners in general over the last 30 - 40 years. There is a general "elbows out" attitude in day to day life, be that road rage or disinterest in one's offspring. Holding the door open for someone is rarely met with a thanks and don't start me on parking round the school gates.
#victormeldrew