Why do we try to prevent suicide when we all die eventually?

Mystery. That is a very good and common question. And, i write having survived my own periods of doubt and depression. The best answer I have is that suicide is a rejection of the mission you were given in your life. It is a denial of hope and it is a flat out rejection of those that love you. There is a purpose that one can discover if they work on serving others and overcoming self pity.
Really??? Suicidal ideation is usually associated with mental illness which can be treated.