How is suicide a ''selfish'' act?

For many people, the death of a loved one always is tragic and painful for the rest of their lives. A depressed person has the option to suck it up, seek medical attention or visit a psychiatrist. Suicide is taking the easy way out and although they may believe it is better and won't hurt anyone else, it hurts everyone who knew them. It is selfish because they are only thinking of themselves and how to help themselves rather than the impact it would make on friends and family.