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.
And require the actual cost of paper billing to be borne by the customers demanding it, not unlike disposable shopping bags in some jurisdictions.