Well, as for the "moment" – people need a reason to get drunk, and children need to believe in a miracle – and so, the date is no worse than any other, it creates a festive atmosphere, even if not for everyone, which is good. People are happy, and some even become a little kinder. It would be nice if they were like that more often.
No, miracles are certainly possible, but the chance of them happening is negligible.
And what makes them kinder?