There are some that argue that man would have been better off without weaponry that could cause a nuclear winter, an uncontrollable bacterial pandemic, etc. By far the most probable result of the scientific method will be an extinction level event (for humans and most living organisms) in the next 1000 years.
Science has done many great things for humanity but they also provided the means for self-immolation. The problem is that man's genetic code has programmed him in such a way that the chances of self-immolation over time are about 100%.
The tribalism is rampant in every human. Every human appears to hate at least one other group of humans, it is in his DNA.
It's interesting to me at least to speculate on Fermi's Paradox in a similar context. We haven't seen signs of aliens and there are any number of reasons that may be, from we are the only technological civilization to The Great Filter.
Any space faring civilization would have one evolutionary imperative common with all others, an innate drive to perpetuate the species. The other constant would be thermodynamics. All life must involve the consumption of resources to maintain, grow and reproduce. Eventually a tension sets in where resources, be they material or energy, become limited and we have set the stage for evolution. One must outcompete for limited resources. Those best adapted survive and this holds for herbivores, predators, plants, all things which have environmental constraints.
It is therefore likely that any alien mentality is similar in some ways to ourselves and therefore possible that competition within the species results as well such as in humans. Unfortunately we are so clever in manipulating the environment and learning about the physical world that our tendencies for elimination of others of our species becomes easier over time.
If we stop for a moment and look at what it would take to travel between stars or erect a structure of such immensity that we can actually detect it in the relatively near future, the level science involve must be vastly ahead of our own.
The sad thing is that self destruction is far simpler to achieve than visiting us.
Maybe there is no one who can visit because they eliminate themselves deliberately or by carelessness.