could this happen?

humanity will become extinct, when we conquer everything, we will be able to create things from nothing, and our territory will be infinite, do not open wars, only peace, for years, decades, millennia, and little by little humanity will begin to die, the fault of its I myself exist, humanity will lose its purpose very slowly, starting with each family having only 1 child, we will look for problems where there are none, until we become extinct, after having had a perfect society