Who is selfish?
Do the people who took their own lives selfish? Why? Because they took something from us, their lives, that supposedly part of our own? Aren't we the one who are selfish? Why would we claim something that isn't ours in the first place. They get to decide, and that decision doesn't involve staying any longer in our lives. You're hurt and felt betrayed, but try to wear their shoes and look back where it went through. Maybe then you'll realized, they too, felt betrayed by the world they thought their place. They fought and tried, and it exhausted their remaining light. They were tired and let them rest.