Sorry about the premature epostulation
Why do proponents of a religion become fixated on a date ?
What meaning can one obtain from information that is beyond an individuals experience?
How does an uncertain belief like unprovable dates bring a satisfying and fullfilling answer?
If you have an answer founded on ideals outside your own experience , you will still have questions , if you buy someone elses answer , it will be ill fitting and you will still have questions.
Starting at the point where we all have a common experience and completely understanding what is real about this existence, is a really good starting point in a life that is worth living .
Running after the belief your neighbor sold you and doing your best to put it on and own it , meh , that sucks ass!