I get all my statements online, pay all my bills online, payments get sent by my bank (for free) to whomever I want. I do it on the same day every month, schedule all the payments for when they are needed. They will even mail out a paper check (free) to anyone I want. I don't know why I even keep a checkbook anymore.
The post office will have to sink or swim without me. It feels good not to have all my financial info going through the mail anymore being intercepted by I don't know who. And don't even allow me to commence on trying to get a paper check to a credit card company on time, then they sit on it at their end, and suddenly you have a $35 late payment fee. NO MORE!!!
I do use the USPS almost exclusively for all my package services.