When I was going to my Floridia residence for several months at a time, I used PO mail forwarding, but I never got junk mail forwarded. But for the past few years, after we sold the Florida place, and while on the road, we do not physically forward anything. All of our bills are paid online and all of my deposits are made direct. All of our service companies bill online and I never get physical bank or cc statements. 99.9% of my stuff is done electronically, I don't remember when I last wrote a check.
My neighbor collects mail in my box and if anything seems like it should have my attention, such as a summons, jury duty notice, license renewal etc. He will send me an e-mail and tell me what is there. If I want to see what was sent, he will open it at my request, scan it and I have it right away. I don't get much mail that needs this done to it.
The post office service has lost its importance to me.