As someone who spent quite a few years in the rave scene hanging out with a lot of drug users and trying a lot of drugs, I’d probably put ketamine way down on the list if I’m ranking them on addictiveness. I’d say most people that tried it didn’t even like it. It’s a particular kind of personality that would take a dissociative anesthetic recreationally. I tried it a couple of times and never really enjoyed it much unless I was mixing it with mdma — at best I’d call it ‘an interesting experience’

Which isn’t to say that I didn’t know people who abused it way beyond “normal” recreational use, but those people were abusing every drug they could find.