I can't remember ever being against drugs. In middle school, I must have been interested in them, because people always assumed I was a huge druggie even though I never did anything. I always researched a lot, and was very interested by the different categories of drugs and such. In high school I became an anarchist and scared a lot of people in my rich conservative town when I would argue for the legalization of all drugs without exception in class debates. But I still never tried anything, though I was aware of at least weed, oxy, and adderall being used by some of my friends. At some point in high school I started to become interested in psychedelics, though I can't remember why. I just knew if I were ever to try a drug, shrooms would be my first choice. I didn't seek them out, but the thought stayed in the back of my mind.
When I got to college, I immediately made friends with the stoners, started drinking heavily, and tried weed a bit later, though I instinctively knew it wouldn't be my thing. I tried that a few times, got bored, and began to research psychedelics online. At the first opportunity I tried salvia, and a few weeks later shrooms, and from that point on I was a dedicated druggie.
I'm still not sure what kept me away from drugs through high school. My older sister went to raves, one of my friend groups would rail any pill they could get their hands on, I knew where to go to get weed, I was even interested in drugs and fully supported people's right to use them. But I just never made that first step. I have a feeling if one of my close friends had offered me shrooms, I would have done them, it just never came up, and I wasn't interested in drugs that wouldn't make me see things.