This type of thinking doesn't help, because jailing addicts doesn't help (or work), either. Addiction robs you of most or all of your agency, it's not so simple as just blaming the addict for their behavior.
The current legal status of most drugs in the US has a profoundly net negative affect on drug use and its ripples, not positive, because anyone wanting to help those addict parents risks just having them simply thrown in prison for who knows how long. Until seeking help isn't a massive risk, addicts will always end up helplessly trapped.
Even if drugs were legalized, children of addicts would still be taken away by CPS and put with relatives or into foster care. It's a crappy situation all around but legalization wouldn't change it
Cigarettes and alcohol harm those near them, but there are stiff regulations in place, there are social stigmas attached, and heavy legal consequences.
The legalization gives the government the funding to actually do something about it in proportion to demand.
We already have seen this during prohibition. It’s either regulate demand, or pretend that it can be banned and let a non government entity rise up and take power.
The current legal status of most drugs in the US has a profoundly net negative affect on drug use and its ripples, not positive, because anyone wanting to help those addict parents risks just having them simply thrown in prison for who knows how long. Until seeking help isn't a massive risk, addicts will always end up helplessly trapped.