No rational reason for the working class.

Thing is, the DNC doesn't represent the working class.

Just as well, the owning class who they do represent knows that the system won't last forever. They don't care about forever. They just care about "long enough to where I won't have to face consequences". That's what they are betting on.

Which is why it's up to the people they exploit to rise up and directly give the ruling class parasites some consequences.