I also presented this same argument to someone else. At one point, he disagreed, saying "Why put so much effort to preserve the human race, when we could make the world better now?" A summary of my rebuttal, "better is subjective". We could focus resources on alleviating suffering. We could for instance, tackle the HIV/AIDs epidemic in Africa. We could cure AIDs, in fact, thanks to the same gene-editing which will soon pave the way for transhumanism, we are on the brink of a cure for HIV. We could solve wealth inequality in America, and I think we should. But, these problems do not exist in a vacuum. The same economic inequality in Africa which causes Neo-Colonialism is related to climate change, which threatens the entire human race. Nuclear-Arms-Production drives modern imperialism, and is indirectly connected to sexism/racism through political ties in America. The disease epidemics of Africa are in-part fueled by superbugs. Lastly, the most important, I think, is that under a transhumanist future, where humanity is intact, true equality is possible. Today, I begrudgingly say, that an egalitarian or marxist utopia is impossible. So long as human instinct commands us over reason, tribalism will be a part of our nature, and thus hierarchy and inequality is inevitable. The only way to eliminate that is to eliminate resource-scarcity and to create a truly peaceful world through technology where any individual achievement is possible.
I think that every progressive should take a look at the inequalities which they are concerned about through a transhumanist lense, at least to gain perspective on a different way of looking at the world. You don't necessarily have to agree with this, but it should atleast be considered.
Lastly, for the sake of my argument I will address the antithesis: it is not our moral obligation to stop the extinction of our species, which would be mathematically certain to happen if we changed nothing, gave up on space-exploration, and gave up on life-extension technology. There are several counterarguments to be made for this, one of which, that person also brought up. "if scientists are irresponsible about unleashing any kind of singularity, it could cause power to fall into the wrong hands, creating a dystopia." This is completely valid criticism, when applied to practice, the de-facto greed of man cPost too long. Click here to view the full text.