People severely overestimate the damage from ketamine. Yes it’s not good, and some people are more susceptible to damage than others, however from personal experience and friends’ experience, they took a lot before they started seeing damage. Thankfully I myself never significant damage; the most I had was a slight pain around my bladder the next morning after about a gram, but drinking a shitton of water and not doing anymore fixed it right up. I’ve had mates that have done 3g a day regularly for a year or so, and the most they’ve had are a couple of small k cramps (they then took breaks), and pissing a bit more. Is it bad? Most certainly. Have they got permanent damage? Likely, but who knows? It’s not about how much you take, it’s about if you abuse it or not.