[dpc59]

You could say I'd have a rational interest in becoming a doctor because I'd stand to make on average 300k a year. I won't do it for other reasons which aren't pondered.

It's easy to make something look rational when you pick and choose axioms. The republicans don't have a rational interest in decriminalization because their financial backers don't want it, and they have moral qualms about it since 100 years of government lies convinced them it's the devil's plant.