While this doesn’t necessarily do away with the inevitable “why” question, it should eliminate this form of it, which personally irks me. The biblical answer to this question is, “There are no good people,” as we see in Romans 3:
“None is righteous, no, not one;
no one understands;
no one seeks for God.
All have turned aside; together they have become worthless;
no one does good,
not even one.”