Beaucoup dollars. Money talks - and tempts. Even with the true leaders in our society. The "marijuana bandwagon" continues to roll and many are looking for profits - and governments are looking for billions of dollars of in taxes. Money is what inspires these two famous policemen and doing things this "medical" way makes them feel/look more saintly within our society. It provides a way for their "grab at the market" to look more respectable.
I am allowed to grow my own for medical reasons. Far less costly - and not part of a "market."