It's helping law enforcement maintain high budgets. The drug war fuels the violence of the drug trade and that violence requires the police be well equipped to handle it.
What's a realistic alternative? What's it going to take for the US to mimic a legality stance towards drugs like Portugal's overnight?
Our government hasn't listened to us for decades: https://act.represent.us/sign/the-problem
They're been no sign of that changing since I've been alive.