Selfish travellers

A recent letter to a newspaper wanted to make it able to penalised people who do not give up their seats. Such a thought is selfish. So what makes them the right to have the seat? The basic rule is the first come first "sit" logic. So if you can't get a seat be grateful you get to stand - comfortablely. Meaning the train is not packed that you have to be standing body to body. So if you are sick or pregnant you should be taking a taxi instead to ensure you get to sit. Everyone pays the same fare and everyone have a chance to grab seats everytime someone alights. Do not complain if you can't get one. It is not a criminal offense. Other then the lack of moral value, no one is harmed. You put yourself in harm's way when knowing you have difficulity travelling standing. Such people are the selfish complain bums that get rebuked from netizens when they complains to stomp website.