It is kind of nifty to get stuff delivered on Sunday.
During the Christmas season, I noticed a USPS van in our condo development one Sunday as I went out to church. I was surprised they were delivering on Sunday and asked the driver about it. He said they had a contract with amazon.
Personally, I don’t care how my stuff gets here (to the door, by the way), as long as it gets here. If the USPS took the deal with amazon, if it costs them more to deliver than they’re being paid, that’s on them and their business planners, not me.