Some previously shared thoughts:
As a person with multiple chronic health issues which tend to come and go either in intensity or outright - literally remission and relapse - I think this is a much better way of framing suicidal ideation and its absence. TL;DR: if you stop feeling suicidal but later start again, don't feel bad...
sanctioned-suicide.net
This is a really thought provoking post, and has provided clarity in my perspective.
I agree with what you have to say – "recovery" isn't a state to be made permanent, it's something one must continue to uphold if they want to keep living it. Much like recovery from addiction, it's not a war you can ever win – temptation will always exist – but you can work to win many days' battles and significantly reduce the effects it has on your life.
When I was at my worst, and seriously considering CTB, I decided to look for help. It takes luck, because the world does suck and fails us in many ways, but without trying, it's much less likely that your situation will improve.
In my opinion, it is worth it to at least try. You might not "fully recover", but you can have normal, even good days. You can still make good things happen to yourself and to others.