If it’s legalized today, that means the government will have to provide it to people who can’t afford it, plus pay for rehab any time they want it. Under the current system, the amount of money this will cost is endless.
I agree. While I'm happy to allow stupid people their right to do stupid things, that assumes that they will also be free to enjoy the consequences of their stupidity. I have no wish to pay for someone else's stupidity. If you want to spend your money to fry your brains, then you should foot the bill for whatever damage you do.