My own situation that I do not especially welcome...
a. I receive my mail very late in the day, near 5pm. In effect, after the close of business for that day.
b. No Saturday mail.
c. No Sunday mail.
d. So many holidays are artificially pushed to the Monday after the weekend, no mail that day.
e. Tuesday mail arrives but, as I said, near 5pm for me and too late for close of business day.
So with all these factors, any given three-day weekend (there are quite a few) I'll likely be in a position where if I don't get it Friday, I won't be able to do anything with it until Wednesday. That's not too cool.
Yeah I know, a PO Box, but come on.