Generally you would get more conservative as you age as you get more assets like a house, car, savings, a pension maybe some stocks and shares, so you get more risk averse and prefer to maintain the system that got you those assets and keeps them appreciating instead of risking it on new fiscal policies.

But as younger generations own less and less wealth, that doesn't happen. I'm 30 years old, renting and have a few grand in savings, and not much else, I would happily risk all I have on a radical change to a socialist system.