The real problem and reason for all of your very real concerns are the confiscation laws that were passed back in Reagan's day. It allows state/local LEO departments to confiscate basically anything that they can come up with even the farthest stretch of bullshit "was involved in the drug trade". Cars, cash, and even entire houses are confiscated with most, if not all, of the proceeds going directly to the department that busted you. This gives your local LEO a financial motivation to figure out a way to charge you with a crime. Most of the time its not that they want to justify the use of their new toys it is that they want MORE new toys and using the ones they have can and very often does fund just that. Hell they don't even need to charge you with a crime to steal your stuff.
The confiscation laws, as still currently written, have been and are still being used for quite literally armed robbery, highway robbery and extortion all of the time. The fucked up thing is that they need zero proof to steal your shit and you are required to get a lawyer and prove that you obtained whatever they stole via legal means. A cop can quite literally stop you, take all of your cash and the burden of proof is on YOU to prove that it is yours and was obtained legally. There was not long ago (perhaps still is) a stretch of Texas highway in which the local PD often stopped mostly minorities from out of state, and if they found a decent amount of cash would threaten to arrest them on all sorts of trumped up charges if they didn't sign over the money. If they sign it over they are free to go, no criminal charges filed at all.
The state being able to take and keep your shit due to supposed criminal activity without even charging you with said criminal activity is about as anti-American thing as I can possibly think of. Like I said, it is quite literally armed robbery. The fact that they have badges doesn't change what they are doing.
You end confiscation laws and I guarantee that you will see an absurd slow down in bullshit raids on non-violent drug users. Until then, just like with the underground drug trade, when you make an activity profitable people/entities will profit off of it.