Agreed. At this point the USPS is an anachronism. Let private firms handle first class mail...whatever there is of it.
I used to send people postcards until I found out that nobody checks their mail much.
This year, for the first time, an envelope I sent the same son, was returned to me with a message "Address Doesn't Exist." My son has lived at the same address for at least 30 years, and I have always sent his mail with the same address on the envelope without problem. He lives in a three story brownstone, and there are three different mailboxes for each flat. His is the second floor, which I clearly mark as 2nd floor on the envelope. Dizty USPS delivery people.