Think about it. It alters your brain's ability to make judgements.
It is known to be just as bad as cigarettes health-wise.
You can validly get a DUI for it.
Find any OBJECTIVE AND UNIVERSAL good that comes from it, that can be proven, not speculated, and I might think otherwise, but seeing today's stuff generation as it stands doesn't tend to give any good support to it.
The only speculated "good" that would come out of it is more high school dropouts, allowing for less competition to get into universities. However, that affects everything else in that subject matter differently. 1) School dropout count raises. 2) Staff laid off from educational jobs. We would be losing qualified teachers that are educating America's NEXT generation.
On the flip side, what are some OBJECTIVE AND UNIVERSAL consequences of not having it legalized.