There are countless reasons why people actually start fantasysing about taking their own lives. But there's one thing that is probably common for most of those who actually do it in the end: the lack of any other emotion besides pain. These are just words, and sure, you could laugh at them as being superficial, but they basically are true. Try to imagine it's summer, the wheather is fine, people are out on the streets, there are music festivals all around, friends are laughing and joyous, families that may not have been the best to be born in but still care for you... Imagine this simple situation, it looks good and by all rights it should make one a happy person. It's my own. There's no reason today, in my life, why I should even think of death in any form or way, but the thing is I do. Death to me sometimes seems more real than life. There's a background to that: my elder brother commited suicide in front of my eyes when I was 8, he lived on because he was saved at the very last moment, but the happening sowed a very dark seed in my own emotional/mental world that I'm still dealing with today. There are other things that were more severe that happened in my life, and not that long ago I underwent a three month therapy for that, and it has helped. I suffer from post traumatic stress disorder, roughly since my brother made his (first) attempt, and now I'm 33... Can you imagine always feeling hollow all day long? Can you imagine having to search for the joy others feel, or for the sorrow others feel, or for the compassion, or any of those human feelings? I do. I feel very little, for anything. I've made my attempts myself, and some angel has saved me twice, and now, after so much time I can truly say that suicide is not the way to go, but I will never ever judge someone who does do it. That all encompassing feeling of hollowness, lonelyness and anger, hitting so deep and long that it eats out your soul and leaves very little left as it moves on just to come back around again, is for some to much to cope with, and I can fully understand that. And endorfines are NOT all that goes on inside, the brain is a much bigger place than we are capable of understanding, and we do not control it... sometimes it sends the black dog, and you never know which one it's gonna be...
Thanks for listening
BTW: I have a lovely girlfriend, two kids, a good job, good friends and a good band. That's part of what keeps me digging for my own lost feeling. Sometimes, just sometimes, I feel a thing or two and then I smile.