Paul said he longed for death (well, not word by word, but it's clear he means it
Philippians 1:
23 I feel torn between the two, because
I have a desire to depart and be with Christ, which is better by far, 24 but it is more vital for your sake that I remain in the body. 25 And since I am sure of this, I know that I will remain and continue with all of you for the sake of your progress and joy in the faith, 26 so that what you can be proud of may increase because of me in Christ Jesus, when I come back to you
His reason for staying: He knew he was needed. Many people feel useless, so they see no reason to remain alive