The purpose of survival is to grant you more time to live. The more time you have to live, the greater is the potential of the actualization of your individual merits, regardless if you take interest in the future or not.
Every choice we make creates two paths; one of which is the benefit, and the other is loss. The result of survival itself that it brings greater benefit and minimal loss the more you live.
Now you may ask why self-actualization is necessary, and I can answer that self-actualization is there to ensure your survival after your death, in the form of whatever that you did and produced throughout your life, with this post-death survival referring to people remembering you and leave a mark on the world. Apart of that, self-actualization is a need.
Thus, the relationship between survival and self-actualization is that of both necessity and of fulfilling mutuality. Also take note that self-actualization can give a sense of purpose and worth to one’s life, which in turn may increase their level of will to continue to live and endure. The more you survive, the higher is your potential that you can actualize; the more you actualize, the more satisfied you may become, which in turn may grow your chances of survival extensively.
I myself take no interest in the far future. It is not because of despair but because the future will be in the present; the future just will be, both only will be, and will be by its entirety. Given the assumption that one cannot predict the future, and that the future is largely beyond our personal control and influence, it is a waste of mental resources to care for something that always comes, but will never be in the present, for every future moment becomes the present, and that moment becomes the past, all over and over again to a possible infinity. Time cannot be controlled, only to be experienced by a manipulating subjectivity. Regarding the inevitability of the future and to its uncertainty, why, indeed, care much about the future, when the potential of the present is at hand?
The basic purpose of survival is to extend your life, and more time to live means more time to produce. Imagine how much wasted potential there would be if survival wasn’t necessary to actualize more potential; in the absence of the potential of our merits and its possible actualizations, committing suicide, I’ll dare to say, would be inevitable for some.
But the thing is that everyone has merits, and thus, everyone has potential, regardless of everything that distinct one of another, and perhaps we all have potential, mainly because we are distinct from others. What justifies our living is our talents and the various uses we can give to them. Every second that flows by is either a waste, a break from actualization in the name of recharging one’s energies, or a time for actualization. These are the three categories of the time of the living. The more you will dedicate time to the 2 final categories, not only you will be more motivated to be amongst the living, but you would be better to produce whatever your merits have in potential, for there is no self-actualization in an unnatural death - only many units of time that of their first category.
I know that everything that I will ever produce - all my own-written books and articles - are probably not going to survive, when a possible extinction of human civilization by some potential reasons might arrive to doom the next generations in the far, far future. Regardless, I am complete with such inevitability, and thus I don’t care much about the futility of the human race in which I merely a tiny part of. Things and beings don't have to live/exist forever in order for them to be beneficial, helpful or contributive to others after the death of their creator.
There isn’t a reason good enough to succumb to the inevitable and die, when you can succumb to the inevitable, and still live and produce; the benefit of the last option is far greater than that of the former.