Selfish is a bad choice of words to describe suicide no matter how you explain it. I personally had a suicide attempt and believe me selfishness was not part of it. The severity of my mental illness got me to a point where I wasn’t in control of all the machinations of my psyche. The lucid me was not in control, I was a shell of who I really was, my brain tricked me into thinking that was the right thing to do. It is so much deeper than throwing a word with a negative connotation on something so complex.