I wonder if it's safe to say that we as a species have attained our peak and decline has set in.
I have considered this, but I don't think so. However, we might have reached the peak doing it the way we have done. If we want to improve, we need to change our ways, and our focus. Industry and technology (as it stands) is likely not the way to improve us further.
As you have said in the rest, the focus should be on wellbeing as humans, in all the forms that are important. Environment, food, mind, emotion etc - we could be far, far better than we are, yet we keep focusing on making profit through industry at the expense of our own humanity.