It bothers me that this fact is usually interpreted to mean that suicides are the result of poor judgment or a disconnect with reality.
It would bother me too if the interpretation was that this is always so. I'm not sure how you could reliably investigate the quality of their judgement concerning suicide. Much of the poor judgement might not be so much the mental disorder itself, but normal hyperbolic discounting combined with severe temporary suffering.
What is something you used to believe, preferably something concrete with direct or implied predictions, that you now know was dead wrong. Was your belief rational given what you knew and could know back then, or was it irrational, and why?
Edit: I feel like some of these are getting a bit glib and political. Please try to explain what false assumptions or biases were underlying your beliefs - be introspective - this is LW after all.