This matches my thinking as well...In general, we are relatively close to breaking new ground in longevity or even aging reversal on multiple fronts...Yet, we are utterly socio-economically, ethically and morally immature for any side-effects that might bring. It's hard to be optimistic about the further divisions this would create in society, and the sheer scale of change that would be required to mitigate the consequences...We are still much more interested in throwing of feces at each other (luckily, mostly symbolically) across imaginary borders, fighting over imaginary tales and dieties and chasing to posses the latest material object which signals success to anyone who can see it, while rapidly destroying our own habitat...I doubt that there is anything that can happen in the short term that could turn things around and make us grow more mature to tackle advancements like this and battle biological and technological challenges before us...Even as an optimist at heart, it seems hard to not have the impression of sliding downwards in recent history / present.
Atheism and agnosticism are increasing every year. Deaths due to war have been decreasing steadily since World War 2. Some people argue that younger people are becoming less materialistic (https://www.econlib.org/archives/2016/10/non-materialist.htm...).
I’m not sure what you mean by “make us grow more mature”, but there could conceivably be some major technological advancement that would give us enough time to deal with the sociological effects of increased longevity. For example, electric cars are taking over, CRISPR gene editing exists, fusion is moving forward with the ITER project and various start-ups, space rockets are now reusable, etc.
I would say we have more objective reasons to be optimistic about our future prospects than not. Things are getting better, and it might just be that train wrecks and car crashes are more interesting to focus on. No one writes stories about the days that someone gets home on time safely.