If you think making better more destructive weapons is social progress, ok for you.
Look at the OP again: "Why has humanity failed to progress socially and spiritually but only materially?" By materially I assume he meant scientific and technological progress. Weapon making is in his third category.
Do you know what social progress means? It appears not. I just told you what I considered examples of social progress and you returned to technology. Even in war, some social progress has been made. Look at the outcry regarding the bombing of Gaza. Look at the Geneva Conventions.
I asked you the following and you preferred to not answer, so I'll give you what I think is the case: "Why don't you know that? How did you manage to miss all of that? Did your church teach you that man has made no progress socially? Some denominations are like that - very negative in their outlooks."
Yes, you belong to one of the Christian denominations that teaches its adherents an extremely pessimist worldview. I presume that these are mostly fundamentalist Protestants of some sort. Catholics, Anglicans, Lutherans, Episcopalians, and Methodists, for example typically don't see the world as negatively as you or those Jehovah's Witnesses I told you about. I don't know what other denominations are as pessimistic as the JWs, but I assume that they are not alone.
There's another active thread about American politics in which yesterday, I wrote the following comment to a MAGA atheist, who also has an extremely pessimistic view of the world:
"My world is a happy one. I don't imbibe that conservative media, and I also don't let the pessimistic [religious] denominations tell me how bad life is. You dodged that second bullet, but the Republicans captured your mind and infected it with a very negative view of your world. Why don't you turn off your conservative media and try to be happier? It's doing you harm for nothing in return. You don't benefit at all from your state of mind. They do."
You seem to be the opposite. You dodged the negative political indoctrination, but it looks like your religion got to you instead. Fearmongering is an effective tool for capturing susceptible minds. It keeps people thinking they need the kind of help that only the source of the indoctrination can provide to protect them from the danger they say is there. For the American conservatives, it's the Democrats and liberals that are the boogeymen, or the Communists or immigrants coming to replace them. For the churches with an apocalyptic mindset, it's a different boogeyman - imminent world collapse and destruction followed by mass damnation.
Anyway, if that's not an accurate description of why you are so nihilistic - your religion teaches you that - feel free to amend it.
And feel free to disregard that teaching if you have a choice in the matter. They rob you of joy in exchange for the offer of protection from a problem they invented and only they have the antidote for. As I told the miserable conservative, my world is happy. I don't listen to either pessimistic conservative indoctrination or to pessimistic religious indoctrination.
Yes, I see the troubles in the world, but that's not all I see. I have hope for mankind. I believe that the rest of this century will be bad for humanity with the rise of authoritarianism threatening democracies and climate change threatening all life, but I see a positive future after that, when man scrubs the greenhouse gases from the atmosphere and humanism resumes reshaping the world for the better as freedom breaks through again as it did 2.5 centuries ago, when people successfully threw off the chains of authoritarianism (kings then) - this time, perhaps for good.
But today should be another beautiful and comfortable day just like yesterday and hopefully, tomorrow. And I am grateful for that and to all of the people that made and continue to make a good life possible.
And I have a spiritual connection to nature that Christianity undermines in susceptible adherents, as it redirects one's attention and gratitude out of the universe to a hoped-for deity and afterlife while demeaning the world and even flesh.
So good luck to you whatever you do.