Except for a very very few people, no one has any clue about what the Big Bang is really about.
You can always take a non-committal attitude toward BB. That's about what I do.
Empirically, the most important part is that red shift is a reasonably well calibrated measuring stick for determining the distance of remote galaxies. Even if some of the theory surrounding BB turns out to be wrong, it will still have value for measuring distance.
Some people go to strip clubs for recreation. Other people listen to rock music. And some people theorize about string theory. I don't see a problem.
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