I have thought of something similar.
Funny thing is, and this is purely from my own experience of the topic.

When I wanted to kill myself, I could not find a reason to live.
when I was not able to pull through and do it, and had to accept that death was not a option, I then found reason to live. I realised that it is a selfish act to do suicide, it is not fair if you have a family, parents, siblings, that you are an uncle, if you have friends etc.
because what you put them through by doing suicide is a selfish act.
But I did not see it in that way before after the state in which I wanted to not live.

I was thinking of a selfish reason to kill myself but found reason why not kill myself which happened to be a non-selfish reason.

So for what you ask and what I conclude from my experience, I see it as, there is no one single, one true answer to you're question.

This quote from the play Hamlet,“To be, or not to be? That is the question—Whether 'tis nobler in the mind to suffer The slings and arrows of outrageous fortune, Or to take arms against a sea of troubles, And, by opposing, end them?” The idea of whether is it better to live or to die.

And to answer the hamlet quote in which the question is, is it better to or not.
It is better to die because you will not suffer.
but it is better to live because then you will not be dead.

/(In advance, I am sorry for bad grammatical writing. and also I am brand new on the site, and firstly did not want to comment, I just wanted to read through topics and answers, but since this was something I have had a real life experience on. I took the liberty to share my view. Even that it is inconclusive :D)