Suicide is a totally acceptable and logical decision to take if the person doesn't want to experience pain and suffering any longer.
Life is suffering. It's a consistent process. Suffering never ends. There are gaps in between, but it always returns. Nature is designed that way.
A conscious person who is no longer willing to face pain, be it physical or mental, cannot be convinced otherwise using logic. There is no logic that can be offered to change his/her mind.
u/TheNotoriousSpeaks — 12 hours ago