I did ketamine twice a few years ago. Bought it off the clearnet, that shit's kind of easy to find online in my country. I had a local drug lab test it and they confirmed it was pure ketamine, no fent or funny business going on.
The first time was a small dose just to make sure I didn't have an adverse reaction, that the effects wouldn't freak me out, etc. A couple of days later, I felt okay just giving it so I took most of the ket that was left and I k-holed. I felt true, complete love for the first and only time in my life. The whole Universe was just wrapping around me and flooding me with love. It was maybe the best thing I've ever felt. The funny thing is I'm aromantic, I've never loved anyone before and those feelings were so alien. It doesn't change that I'm aromantic; I realize the experience was nothing more than a drug affecting the chemicals in my brain.
I still have some leftover ket from that whole thing but haven't felt like using it. I'm like that with a lot of drugs; I'm curious about the experience but they don't suck me in. In the last decade, I've done shrooms once [ended up mildly allergic, so there won't be a second time]; LSD a few times; 2CB once; MDMA once [that was a fuck-up on my part, I knew it could react badly with my meds and I had a bad fucking time].