So, one wants to CTB badly, no matter what. So do I. I make discrete and careful considered preparations. So do others. But why leave a note behind or make a last phone call or give other hints away? This is a severe reduction in success, if not a failure at all. I know I am going to do it, I do not want to be found and I do not going to write a good bye note. What is the point in this? I really would like to understand this. This is not criticism or judgin, just need to understand, so do not take offence.
Generally, people who CtB and leave behind people who care about them, and want to make it as easy as possible on those people. Having a body and a note generally helps in the grieving process. (And the lived ones won't spend time and money search in vain for a "missing" loved one). If someone who CtBs has assets to leave his/her survivors, being found dead makes it much quicker and easier to execute a will. There are other, less common motivations as well - someone on here recently posted a thread about suicide in response to an upcoming prison term... I imagine that if he were to go "missing", the government would try to find track him down on the assumption he "fled from justice", which would involve questioning and generally harassing his loved ones about where he's hiding or ran off to, so avoiding that would be another reason to want to be found.
A lot of people who CtB also have self interested reasons, like a desire for a certain type of funeral, burial/cremation preferences, and that sort of thing. Sometimes this is based in religious beliefs that stipulate a particular way a body is to be handled, sometimes it's just personal preference. (I personally don't understand that, but it's important to some people.)
But why leave a note behind or make a last phone call or give other hints away? This is a severe reduction in success, if not a failure at all.
Not necessarily. A lot of people who attempt suicide don't really want to succeed, and will do things like call a friend or emergency services for help in order to be saved. So yes, the statistics may show that people who leave a note or call someone are less likely to succeed, but that's also a biased sample - it includes a large proportion of people who don't actually want to die.