What ever happened to it?

Nudges, shuffling and bumping are just some of the things that i experience when i get on or off the train every morning. The last time i remembered, people were suppose to show courtesy and wait for the people on the train to alight before those on the platform get on. However, this is no longer the case. Everyone moves all at once. The people on the platform dont wait for the people on the train to get down and because of this, the people on the train have to SQUEEZE their way out in order to get out. There are even times when people who are pushing prams, have to shout their way out because of the rushing crowd.Yes, Shout. Its ridicillious! Its due to some people that it has become a social norm to do such things and be ignorant of courtesy. So the question now is, what happened to courtesy? Lost to social norms? You decide