The older people get, the less they want youngsters to vote, drink, and drive--unless they believe they have something personally to gain from it

I'm not sure about the evidence for that gross generalization but young people are much less likely to vote than older people.

Plenty of data on this: https://theharvardpoliticalreview.com/gen-z-voter-barriers-2...

This is why you've gotta actually think about what you believe morally speaking at an early age and then stick to it. I don't vote, drink, or drive myself, and never will, but I hope I will always defend the rights of the youth to.