There's nothing wrong with smoking pot, it's obvious. It's far better for you, both mind and body wise, than alcohol, yet that never stops being pushed on people via various media streams.
There is no question at all that THC helps or even cures many different ailments for many different people all over the world. As the OP stated, the only reason it's illegal is because it's not profitable, not because the government wants to take good care of us. You can get pills containing THC, go figure.