I understand your post completely and what you are saying - but please indulge me one moment to add my 2 cents (as I am sure others will as well )
You mentioned a few times that you are a recreational drug user. River, by far, was no recreational user. He was an addict. An ADDICT. He absolutely could not live without his drug(s). The obvious resons we know this are because of the amount of drugs in his system. No one can ingest so many in a few hours and still be able to function going to a club with family and friends to take even more. His system had been building up a tolerance for quite some time.
If you are a recreational drug user - I wouldn't be doing myself or my career any justice if I didn't try to talk you out of it. Or at the very least, I beg you to be extremely cautious of any drug you use. There are far too many drugs on the market today that will change the chemical make-up of your own bloodstream and CNS, causing your own addiction to a substance whether you want the drug or not. An addict isn't just someone who wants to do drugs (recreationally or otherwise). The addict is the one who cannot live without the sh*t because their body has gotten too dependent on it (them). A couple of examples right off are Meth and Heroin. After "Katrina", my family and I moved to a small country area not far from NOLA, and I have to say the meth problem here nearly outweighs the Crack problem I saw on the streets in NOLA. That being because of the Nitrate tanks that are plentiful in the area - plus a very cheap drug to make. Like Heroin - one hit and your hooked. A hit or two more - you are an addict. No question. Please be careful.
I think it was also Ana who brought up the point that I haven't considered in a while .... and that is that River and those who surrounded him probably kept feeding his addiction because River was cash in the bank. Why go to rehab or try to get clean when taking time off would damage the young stars reputation and then snowball into a bunch of B-Grade movies and small television appearances? Maybe even on a reality show? (cough! cough!). This is EXACTLY the moves that Corey Feldman and Corey Haim made, and as we can also see, the drug use that went public along with the several attempts to get clean has turned them into movie star "has beens". That is extremely sad. Corey Feldman says his downward spiral was not only drugs but a poor family relationship and parents who took all of his earnings. Whether this occured or not - the downward spiral happened IMO because of the drug use.