It’s obvious that you have no understanding whatsoever of normal suicide (suicide by cop being a totally different animal). Selfishness has nothing to do with it.
What the heck is a “normal suicide?”
Yes it does. They think no one else has pain like they do - because they didn't care to ask or know. It's all about them. He could have, actually, helped someone else if he spoke of his pain but he was too focused on himself. There always is someone worst off. He didn't care to know, an island unto himself. So the way he handles pain is with a smile to deliberately deceive others - You can't see what is inside of ME. He may have been focusing on what he didn't have instead of what he did have!
It's always better to be honest than deceive. Don't you agree? He's was 23 with a job and able to work, a car, family/friends and living in America! He's already had more than most.
Selfishness has a lot to do with it. Too selfish in wanting an immediate and permenant solution to a temporary situation and scarring the train engineer for life. It certainly isn’t compassion.