Here you are, and again here you soon will not be. If you posit that you will return to what you were before you were born and remain there eternally then here is what I believe are some of your options…
You can choose to cut to the chase… How droll since you are going to get there anyway, and maybe you are the exception among us that can find a way out, or at least trip over the switch.
Next option: There are many who cannot, or will not fathom this concept no matter what. They are leading their lives like so many water fowl heading this way and that with the changing of the seasons. The fact that you can face inward and recognize this dilemma does make you special, and is not the typical mental state for much of your fellow beings. So there you could choose to see some responsibility over those that are blind. If you see that, then maybe you will decide to be a benevolent, or malevolent force in their lives. I hope you will choose benevolence. Pain is avoided, because it is unpleasant… Regardless of whether it is mind numbingly temporary.
Next option: We see that death is what sends us to the non-being we’ve posited. Since some creatures live for seconds, and others for millenia, maybe you could concentrate your life’s efforts on prolonging life and possibly someday there will be some who might avoid the condition of non-being altogether and your effort would have been a step however tiny on the way to it!
Then there’s this: Say you decide nothing really matters for the reason mentioned. You are now in possession of the ability to take wild, dangerous, mundane, or whatever other kinds of risks with no fear. Why not try absolutely anything. Maybe you will see something, and find very deep meaning in one of your risk taking adventures. Maybe you will see that you live for risks?
Finally, if you find no value in your own existence, I believe that it is logical to donate your existence to those of us who do find value in our own, and yours. Say you have decided not to exist, since you know this is unavoidable I say it progresses naturally that you will not be kept from your way for any meaningful amount of time compared to eternity.
Consider, if you decided to count to infinity, but after counting to the number three you hoped to escape counting until you reached 11 where you would commence counting up to infinity. This life is triflingly short compared to the non-being we posit we are rushing towards, so there is certainly no reason to rush if any value can be found for you…even if it is the tiniest ember of value to someone else who you may not even know.
If you cannot find such an ember…I am sure your world is a dark place…but know that I have it for you, as do others, some not even human!
If this sounds like a talk down from suicide, it is because it is! You speak of nothing less. Regardless of whether you feel this way or not, some other deserted soul will wonder this for this very reason, and will search this global network we call the internet for an answer that will contain boolean operators not unlike those within your question.
If you are reading this you are alive. May you remain so always, and if not may you die trying. Until we are all saved from it, until we can go back in time and rescue those who might go into it, until we can erase it as it has tried to erase us!