Well, you'll have a really hard time convincing people that it's good. (Unless they already have a vested interest in rationalizing their decisions.)
Nobody ever got smarter from smoking too much weed.
Carl Sagan: Cannabis enables nonmusicians to know a little about what it is like to be a musician, and nonartists to grasp the joys of art. But I am neither an artist nor a musician. What about my own scientific work? ... I have made a conscious effort to think of a few particularly difficult current problems in my field when high. It works, at least to a degree. I find I can bring to bear, for example, a range of relevant experimental facts which appear to be mutually inconsistent.
It does seem like the cannabis had a negative effect on my memory and emotional stability (I was high basically the entire day for several years while my brain was still developing). And many of my worst paranoid delusions ever have been on uncomfortably high doses of cannabis. But so have some of the most beautiful and dare I say spiritual experiences of my life, and I wouldn't take those back.
I do wish I'd waited until I was older though, and in a better place emotionally (I was using it as a painkiller, if you will.)
All things considered though, I'm a much bigger fan of psilocybin and LSD. Rather than worsening my addictions they made me quit a lot of unhealthy things I was doing. I also found microdosing to be very beneficial.
For comparison, you can conduct a business meeting on a small dose of LSD and find that it actually helps you pay attention and think clearly, while even small doses of cannabis will interfere with something as trivial as a trip to the corner store.
What about having fun or relaxing? Most recreational substances or activities aren’t supposed to “make you smarter”.
Weed has already thoroughly permeated society, no use trying to turn back the clock there. We should just stop arresting people for it and stop making it so you have to take unnecessary risks to get it.