Most people with suicidal ideation are simply making gestures as part of a cry for help or even just to get attention.
And what about the suicidal person who is simply going through an extremely rough patch in life or is mentally ill and would benefit from therapy and/or psychotropic drugs?
Yeah, maybe during that narrow window in their lives they genuinely want to die, but if simply committing them to an institution for a few weeks and keeping them safe and under surveillance is all it takes…. why jump the gun and help someone kill themselves?