I read a blogger once that talked about the people who committed suicide on 9/11. The ones who jumped from the building because of the heat of the fire. No one said that they were selfish or that they should've kept hope and stayed positive that they might've been saved. Everyone understood that the physical pain they were feeling was so intense that it made suicide the best option. And she said that's the same amount of physical pain, but inside of her, that she felt before she attempted suicide. She said imagine a heartache you've had and times that by 100. One that never goes away. That's there from morning until night. That's what drove her to want to do anything to end the pain.
I did not read the whole thread, but I personally do not consider people who jumped out of the World Trade Center on 9/11 as committing suicide, but the decision is with God.
Once I was in a hair salon the beautician was talking to a mother of a woman who killed herself. The deceased child was there in the salon and apparently she found her mother hanging from the wall. I hope that child would not grow up thinking she was the cause of her mother's selfish act.