It doesn't affect me now, as my primary work is as an employee.
But if you are trying to start a business from scratch, and you are getting the equivalent of 4 or 5 months revenue in the mail from a client, yes, it will matter. Not just the absence of delivery on Saturday but - I'm guessing - slower services generally. This is just another in a series of cuts to the postal service that has slowed down the mail and made them less competitive at a time they need to fight to keep customers and maybe win some back.
It's almost as though congress wants to give private carriers a boost or something. Funding pensions 75 years in advance? I don't get that!
"Puccini cries out for spirals, but really good ones." ~ Dick Button, 1998 Worlds
We have to wait for the payment from our rental, but the lease says it has to be in our hands on the 1st, so that is really the tenants problem with mailing early, rather than ours waiting for it.
Then again, waiting a few more days for my freelance check (which was probably mailed late already ) doesn't make much of a difference. But I have been in situations where it would.