1. Corporate interests want to reduce hemp use for oil and material to help their dino oil products

2. People buyin that its bad

3. Politicians use it as a way to think people are bad

4. One generation later and the reason is whatever is most expediant.

I believe that 80+% of politicians today that oppose legalization do so genuinely because they grew up being told it was bad and a gateway drug. And they're too ignorant to consider the Nixon quote or that their government has always been bought and paid for to maintain a status quo

That's fair, and makes the most sense, I suppose