I used to feel that way. I'm an impatient fuck (at least slightly more so than any other type of fuck), and it would seem, after depleting my monthly supply of prescriptions within 2 days, like an interminable wait, floating in an austere and barren plain of sobriety-induced sheer anhedonia and insufferable melancholia.
Then, I had an epiphany. Why must I abuse myself by living dependent on my prescriber, when I could simply bypass the intermediary with the power of science? In my case, the drugs I felt I desperately needed were benzodiazepines. Those were challenging to make, I found. But, as I perused the literature, I found that much stronger, more efficacious classes of drugs were a veritable cinch to synthesise: barbiturates, quinazolinones, GHB and analogues, inhalational anaesthetics, 2m2b, ethchlorvynal, methylpentynol, chloral hydrate, tert-amyl alcohol, chlorobutanol, etc.
In all earnest, I almost had an orgasm when I discovered the unbelievable ease with which methaqualone and its cognates could be synthesised by the sufficiently motivated and modestly well-read autodidact.
Clandestine manufacture of stimulants is just as, if not more, facile. I would probably require at least 4 or 5 hours to compose a list of stimulants accessible to the self-taught organic chemistry tyro off the top of my head.
So if downers or psychostimulants are your drugs of choice, the only obstacle between you and an inexhaustible quantity of these compounds is the distance between you and the nearest library or Internet source.
But I think I would probably have died from hopelessness years ago, had the drugs I desired had been some opioidergic (oxymorphone, morphine, kratom derivatives, etc.). The chemistry of these are such that the expertise necessitated is many times greater than that of my self-taught capacities. I'd need at least a couple years of formal academic edification to attain the competency to execute a successful total synthesis of, say, hydromorphine or dextropropoxyphene.
I suppose that's not too much of a requirement. But no one lacking a month's worth of patience would be amenable to a two-year stint in academia to learn about chemistry, I'd surmise.