It’s a plant. Plants should be legal to grow. Maybe sometimes you will have to take steps if you want to grow it and it’s an invasive plant, but it’s still a fucking plant.
I use cannabis medicinally, and it’s true that I would prefer to vaporize it (I don’t smoke) when I use it than take some sort of pill. Because it gives me very fast pain relief. I’m sure if inhaling ibuprofen worked much faster than taking a pill, people would do that too.