When someone asks you “Why are you doing X?”, And you don’t remember an answer previously in mind, Do not ask yourself “Why am I doing X?”.
How dangerous is that second step? There’s definitely potential for confabulation when you try to remember if you’d ever actively decided on X.
our social structure and business rests on the tenets of what we believe
That sounds like propaganda, like the claim that atheists can’t be moral. Don’t let anyone tell you what to believe, especially don’t let them tell you that if you disagree one one point, you must disagree on others. Work out for yourself what is possible.