That’s not actually value if it’s just enabling waste. Think of all the junk mail, bills that could be emails, etc. In your very example, why mail a check? You could do ACH or another type of EFT.

The only steel-man argument is that USPS provides coverage for that last 1%, living in the boonies, unable or unwilling to use a computer. But that’s at huge cost to everyone else, so much so that we should just give those people a computer and a 1Mbps Starlink connection for free to enable us to get rid of USPS.