You're cherry-picking with this one. One very specific "advancement" (if you'd call it that) had a small, particular, and highly debatable role among huge political and economic forces in contributing to the fall of the Roman Empire. Sweeping statements such as saying their advancements in technology led them to their downfall is like placing blame on the technological advancement of Western society for the death of a car crash victim.
Ridiculous, inaccurate oversimplification of historical events. What about all the technological advancements that allowed them to reach their peak? They had unprecedented infrastructure. Aquaducts, roadways, architecture. Do you suppose these were also the root cause of their downfall?
And why is it that you know this? Technological advancement.
This "argument" doesn't make sense. They weren't a warrior society. They didn't consider fighting an advancement. They considered their civilization, not the fighting itself, an advancement. They fought for territory to expand their civilization, which they did obviously believe was superior. Besides, nothing I've read attributes the fall of Rome to "fighting for land and pagan gods." Also, most of their enemies were pagan as well.
I didn't understand it when you wrote it. One with nature: honestly what is that supposed to mean? You seem to think that we'll all be happy and stress-free if we go back to foraging for food. Wait, what about farming? Is that considered "meddling" with nature and technology? How would we avoid land conflicts without some sort of planning? When does civilization get so complex that it crosses your arbitrary definition of "meddling with technology"?
You're assuming that there are secrets to life, that they equate to happiness, and that animals have somehow found them simply because they are alive despite their lack of technology. I think that's absurd.
Your posts seem to carry a theme that learning and striving to achieve both exclude happiness and companionship. I personally enjoy math greatly. Many people actually enrich their lives by helping to advance technology. I know many engineers that love their jobs. I don't understand why you think that such learning necessarily involves "stress" and "illness" and that living a simple life without technology somehow relieves this. What's wrong with thinking about what you have to do next? This is rather helpful in life. Sure, quite a bit of stress is involved in the medical profession, but there's always been a reason for it. No one's going to say, "Oh darn, my kid has scurvy. Too bad there's nothing I can do about it."