My perception of suicide is not shared by many, but since I have no fear of death nor do I think death is bad, I think everyone has the choice whether they want to live or not.
Some people fight for life, some for "death". It's not sad, it's much sadder to live on this planet in terrible pain.
Why do humans celebrate a birth and not a death? It's part of the circle of life.
I do not think it's corwardly to take your "life", it takes a lot of strength to face the unknown of death, more so than facing the unknown of life
just my opinion