Aging is an essential process in the cycle of life.
So are diseases and genetic defects, for example - thining out the herd through evolution, making sure the survivors have the most updated genes to fight the current diseases, themselves constantly evolving. Would you suggest that we stop treating them ? thinking like that, we should also stop extracting problematic wisdom tooth for people, because that also is part of the "cycle of life".
We have consciousness. This allows us to go beyond our mere nature and try to decrease suffering, for everyone of us. Aging implies suffering. And beyond this, aging should IMHO become a *choice*, not something that is imposed upon us.
In my mind, the very expression "cycle of life" evokes something almost sacred/religious (or at the very least romantical) in nature. There is no sacred "cycle of life". We are the product of randomness, and our consciousness a response born from the process of evolution to a universe where anything can happend, at any time: self-awareness, the ultimate (for now at least) way of surviving in such an universe, by allowing our species to react at time scale inferior to a generation - by being aware, we can analyze our universe, understand it, and overcome potential species-wide issues at the scale of a lifetime, instead of relying on genetic evolution over larger timespans. If one day we finally get our collective asses to space and start colonizing other planets, then even a nuclear winter following a meteor event (such as the one that wiped out 75% of earth's species at one point) becomes survivable for us. Such a thing would be highly unlikely without self-awareness.
And precisely because we are self aware, we should in my opinion consider aging as a remnant of our animal origin: something to be fixed. Eventually, even our very bodies ought to be replaceable. I know *I* certainly long to see in wider wavelengths, to feel and experience more and thus to become more aware. It is the essence of transhumanism, and in my view what we should aim for.
As for the ressources issue, we have an entire solar system full of ressources, and an exponential tech development curve to match it. Even on earth, tech such as transmutation will eventually make ressources wars pointless, and scarcity itself could become a thing of the past. I'm not saying we'll see it for sure during our lifetime, but I definitely wouldn't bet it won't happend. I was born during the eighties, and the tech progress I've witnessed during my (admitedly short) lifespan is simply staggering - a lot of the SF stuff I read as a child is already a common part of life. We live in a time of miracles, and I think it's only the tip of the iceberg and we'll see incredible, profoundly changing progresses during the upcoming century.