NYC is the only city which has such requirement and have to provide subway to support them? How many other cities provide same 24/7 subway transit? why the other cities don't provide such service? The other cities don't have people work so late? How does those people commute?

"This is why other cities have shitty transit."?? If NYC continue with current shitty schedule, the subway would be worse and worse, which means less and less commuters will rely on it, and eventually it will be closed as worthless. Will you be happier? As at that time, nobody will benefit. Be more practical, gentleman! We are living in 2018, there is lot of proving that we should optimize a system by reducing the bottleneck. For those 0.1% commuters, they don't nee the whole subway system to support them, they can take bus/shuttle or even uber, which will save millions of dollars for the whole system, and also improve the rush hour transit much much better.