This is going to sound weird, but...
For some reason I started reading (devouring) any books on drugs(esp. PDR, etc.) that I could find. I think I just wanted to be knowledgeable (hard-core DARE; Ronald & Nancy era...). My area was kind of dry for a long time.
I intensively researched the word 'euphoria'. Anyway, my Mom had some degenerative disk disease and had some orange K2s in the medicine cabinet all the time. So, to make a long story short my FIRST drug experience was w/ hydromorphone (no IV, yet, only eaten and snorted...). A lot of it....
Then, though, it was mostly weed and some psychedelics for awhile- until I realized that I love opiates (and dank).
So, now, as an RN & an RPh who lives in an area of no supply (for opiates- on the street anyway...), I'm ready to move a family of 5 to the Pacific NW (most likely the Olympia area due to a job offer) so I can score (on the street, whatever...) my medicine. This way I won't get fired due to the constant TEMPTATION that comes w/ being a nurse and a pharmacist...

But anyway, I guess opiates were/are my first love, with fine ganja a close second.