Suicide is a touchy subject, and I can see both sides of the coin; those who think it's selfish and those who think there is nothing selfish about it ( due to mental disorders etc..)
Here is my experience, my father commited suicide when I was 15, it was definatelly a shocking experince for everyone in the family, you sometimes hear it happening to other people but never expect that it could happen to you, I was too young to understand the situation at the time.
I had a hard time forgiving my dad for what happened, but as I started getting older and understanding the situation better and what led to the situation I forgave him, and started focusing on the great times we had together.
Today I am a grown up man, I am doing well and I am happy, so is my sister who was much younger than me when it happened.
We do miss my dad, but as of today there is no resentment in my family to the suicide, whenever he is brought up its the positive things and the good times.
Two things I got from this situation were, in my case, appreciate my family even more and always ask people how they really are, you rarely know how people are really doing.
This is my experience, and I don't expect everyone to deal with a situation like this the same way as I did.