They know it’ll make people lazy and dull and need more democrat welfare.
The whole system, the whole culture, the whole population is different than it was in 1900 when the stuff was unregulated. Its simplistic and shortsighted to think that merely legalizing weed will make a positive impact or be a good thing.
Much deeper thing need to change before I could sanction legalization of marijauna. When my 2nd amendment rights are no longer being infringed, when my 1st amendment rights are no longer being trampled, when queers are no longer pushing their crap on tiny children in schools, when 1/2 of the federal budget is no longer spent on welfare, when the single payer communist healthcare system is revoked, when our military is no longer a social experimentation playground for the libs, when my taxe are not sucking up 1/3+ of every buck I make, when borders are closed and the illegals sent back to where they came from, when Judeo-Christian values are not trampled and spat upon in the public square, THEN I'll care legalizing weed. Not before.