Many would rather be around someone stoned than drunk. Many would rather stoned drivers going slow than drunk drivers weaving and passing out.
No reason not to have the freedom to choose either. No reason not to have the freedom to choose many things we are currently denied by old laws and nanny-state regulations.
Many want the freedom a lot more than anything else. With thousands of laws restricting everything from propane bottles to freon to drugs to car safety - how did we ever function before that?
These foot-thick books of laws are strabgling freedom a nibble at a time, and taking money out of our pockets.