I don't think they ever really do, but I also think that it is based a lot on environmental factors. Currently, my job which is high stress is one of my main reasons for my thoughts of CTB. It is that demanding. I also think a good portion of my home life may be to blame as well. That being said, I have had SI thoughts since I was nine and there has been months at a time where they subside, but they eventually come back. During this last bought of depression I am at the closest I have ever been to CTB as I have already purchased supplies. I do think it is somewhat true what people say "people don't want to CTB, they just don't want to live the life they have." I think if I had made some different choice along the way, I may not be so inclined to end it all if I didn't have to live with the consequences of those choices. That being said, I had SI far before I made those choices, so it might be a brain issue. In short, mine subsides for brief time periods, but seems to always return.