I guess at the core of it is our view on life. Does our life matter? For many people, we know our life matters to other people. We hang on because we know how much it would upset them. But I imagine, for some people here, they feel as if to them, it wouldn't matter if they end it. In fact, many think they would be saving themselves some pain by ending it.
For me personally, I don't really buy in to the whole- 'You have to overcome all your problems.' Because- that is put on us entirely by other people- in order to keep us here and keep us complying. Besides- I have fought hard to overcome at least some of my problems and the end results haven't felt worth the effort. Why would life suddenly improve now?
Who am I fighting for? That's the major question I think. If it's still for you. If you can genuinely still feel satisfaction from your achievements. If life still rewards you enough for putting in that effort- then, great. If it's for other people and they feel worth it, then that's a tether you might have to put up with if you can't reconcile breaking it. (In my case.) Otherwise, surely it's just complying and I'd rather rebel against that.
Plus, I suppose I don't really beieve in an afterlife or future consequences for CTB. So- the moment it's over- that's it (hopefully.) No more regrets, no more worry, no more trying. It won't matter to me what I didn't get to achieve.
That's the crux of it though I guess. What is it you still want to achieve in life? Can you? Will it mean enough to you? I suspect we're more ready to let go when we realise that we either can't achieve what we want in life. We have, to some extent achieved it and it hasn't been rewarding enough or, we doubt the end result would be rewarding enough.