I have thought about this a lot. I have said for a long time that human space exploration doesn't make any sense to me. Space is so hostile to our life in general it seems that only purpose-built machines make any sense for the job. But of course for the preservation of our species, we would want to be able to send the "seeds" of our ecosystem to other places.
But then, if we have progressed to that level of technology, where we can send cells or even just DNA with the machines to be cultivated far away in the distant future... would we even bother? Would we even consider ourselves distinct from the machines by then? Honestly I'm not sure. It could very well be that we consider our creations to be our "children", so to speak. Destined to inherit the universe as we pass gradually into the dust from from which we came. It seems inevitable if we eventually crack AGI or artificial consciousness.