Given that Tube drivers are about to earn £52k BASIC for a 35hr week, get paid while training, and, can walk away with no debt our outstanding bond if it all goes pear shaped, you’ve got to ask,..are wannabe pilots sane enough to pass the medical?
It's not just about money though is it? You want a career that you're passionate about and if it's flying planes then you will try to find a way to make it work. And those who do make it to an airline job will in almost all cases earn more money than train drivers over the course of their careers.