People have changed (more or less) throughout the history of mankind.
Consider that you are observing a very small segment of the existence of mankind upon the planet. People are malleable ... sometimes for the good, sometimes toward the evil.
The record of the Israelite nation in the OT is sufficient evidence of this.
But we know historically what happens when they abandon belief in the true God...
And people in general are becoming more and more confused, lost, depressed, hopeless, miserable, exceedingly sorrowful, broken, beaten down, etc, etc, day by day, and it is happening all over I think...
And of the ones who are not, it is much worse, for this is happening right now as well:
2 Timothy 3:1-7- "But know this, that in the last days perilous times will come: For men will be lovers of themselves, lovers of money, boasters, proud, blasphemers, disobedient to parents, unthankful, unholy, unloving, unforgiving, slanderers, without self-control, brutal, despisers of good, traitors, headstrong, haughty, lovers of pleasure rather than lovers of God, having a form of godliness but denying its power. And from such people turn away! For of this sort are those who creep into households and make captives of gullible women loaded down with sins, led away by various lusts, always learning and never able to come to the knowledge of the truth.
God Bless!