There are 7+ billions of "evidences" sitting around. Look at the people alive today, chances are that either their ancestors did something like this, may be as little as 1 or 2 generations ago. Over the last 10 thousand years (or any other arbitrarily large time-frame), there were large number of potential ancestors whose offspring did not make it to the 21st century. So those people must have been doing something right...
But of course, it is really easy to demand more evidence for the facts we "very much doubt" that for those that confirm our preexisting ideas.
But of course, it is really easy to demand more evidence for the facts we "very much doubt" that for those that confirm our preexisting ideas.