I doubt “they” were all of exactly one mind. There probably were religious moralists who thought the deity didn’t want you to drink; there were probably also people who had had an alcoholic parent, and saw what that could do to families, as well as recovering alcoholics who were either trying to make their own lives easier, or hoping to remove temptation from future generations. There were probably health fanatics who thought that anything slightly indulgent had to be very bad for you (yes, they have been with us for a long time), and probably naive people who didn’t like to drink themselves, and really believed that once it was illegal, people would forget about it in time.
FWIW, I would never think of trying to make alcohol illegal, and I’m also in favor of pot being legal (but I wouldn’t use it), and decriminalizing other kinds of drug use (albeit, with restrictions, exactly like we have for alcohol: employers can tell you you can’t come to work high, you can’t drive under the influence, etc.)
BTW: I expect to be appointed the designated driver regularly in the future, once word gets around. If my social circle won’t be rotating the responsibility, and it will mostly be falling to me, am I out of line to either ask for gas money, or to use someone else’s car? FWIW, DH has a car that has five seatbelts; mine has only 4 (and one is sticking-- I need to take it in). I have a few friends with SUVs or vans that have 7 seatbelts. I’m actually thinking more of rotating cars than asking for gas money, not just to keep things even, but because of the seatbelt issue. Indiana has a “primary stop” law for seatbelts, which means you can be stopped merely because a cop suspects someone isn’t wearing a seatbelt. Some states don’t have “primary stops,” and issue seatbelt tickets only when you are stopped for something else, and the cop notices someone not wearing a seatbelt.
They will even ticket you here for “improper” seatbelt use (and it’s like, $250), which means if you have the shoulder belt under your arm, or behind you (which big-busted women used to do all the time), you can be ticketed.
Also, FWIW, I supported the mandatory seatbelt law when it was proposed; my father witnessed an accident once (he had to give a deposition) where everyone in one car was belted, and walked away, and everyone in the other car wasn’t: the two in the front seat were killed, and the back seat passenger was taken to the hospital with critical injuries. My father was right behind one of the cars, and not belted, but he became fanatical about seatbelts after that. So I was brought up with “always belt.”
I will not start the car until my passengers are buckled in. I don’t care if that makes me seem either nerdy or fanatical.