@Ernest Bywater
The only thing I'd add is some people now get high by sniffing glue and certain aerosol propellants.
While definitely not healthy, that too is a small subset of individuals, particular to a particular generation. It was (once) used by kids desperate to get high, before they were old or knowledgable to purchase the more serious drugs. If you can't purchase pot, and aren't old enough to purchase alcohol, what do you do, turn to what you already have around the house.
Moreover, that pattern was handy before kids started collecting and trading bowls full of their parents' medications (esp. adrenal and other popular drugs directed at kids. Since that's obviously a much more effective high, and 'seemingly' safe (to kids), it a better solution than the mild high and high cost you get from things like paint thinner. (With paint thinner, the room spins and you feel good, before you start hacking your lungs out!)