When it comes to methods, yes, while it is true that there are many people (in the past and present) who have succeeded in hanging (either partial or full suspension), there are many more who have failed. Furthermore, even though a rope may be available, it doesn't always mean that one's circumstance is preferable. It certainly can be agonizing (as with many methods if not properly planned, prepared, and/or researched) upon the attempt of said method as well as uncertainty in success (especially if there are things that don't go to plan). Finally, the peacefulness of hanging would only be likely if one were to execute it properly and also lose consciousness quickly enough before one's self preservation (or survival instinct) kicks in.