This might be anecdotal, but even though they can be fun, but they're also very exhausting and make you introspective and also kinda encourage you to think about improving different aspec of your life. Sure, there's some bad trips that make people psychotic, but I think that legalisation and regulations would help protect those peope, rather than harm them, because there's usually an underlying condition that triggers such an episode. On the flip side, I've had bad trips a few times and they usually taught me a lot about myself, the people around me, and how I lived life at the, which in turn pushed me to change for the better, and improve some aspects of my life.
these arguments never seem to have a separate addictive from non-addictive drugs component.
I don’t thin legalisation would hugely increase use.