Somebody complied a list of goodbye threads here that seem to suggest, based on nearly 100 cases, that it is around 80% effective if you follow the protocol closely, though I'm not sure it's that high, but it's pretty high. PLus for people who don't ctb there is typically not lasting damage, it seems, and people often succeed on the second attempt, though usually they feel very sick for a few days if an attempt fails. If some people arew bieng damaged by this without ctbing it hasn't shown up in articles online yet as far as most peoplpe here know, and considering that some people are against ctb these casesz would likely hit the news pretty quikcly if they occurred, though no one knows for saure. IN short- prett6y high chance of success, seemingly not much downside risk, and it can be peaceful when it goes well, though it doesn't always happen peacefully. Based on the anecdotal "evidence" so far it appears like the best combination of riksk factors for many people.