Am I selfish?

Am I selfish for wanting to die? Would I be selfish if I attempt suicide? This is a genuine question. I couldn't wrap my head around it(I may not be the smartest around;)... Someone I know told me that I am selfish for wanting to suicide. I wonder what made them say so. So, my question is this. I'm really curious for answers(if there'll be any). For wanting to leave every relationship(good or bad) I have, for wanting to leave the people who've raised me with love all alone, for wanting to leave everything(including friendship and siblings who've done nothing wrong but be nice to me) behind. Am I really selfish? For hurting this body whose done nothing wrong, but who's been only sickly. For letting go of everything I could've gained nor gave to my loved ones. For not wanting to live at times and sometimes even trying to act on it.