The main issue I have with my mail is that 80% of it is spammy garbage. This of course means that most of the stuff the mailman has in his bag and in his truck is probably garbage too.
If mailmen were delivering valid mail only, I'm sure we could afford to have door to door delivery still. So.. why are we spending tax dollars to get spam delivered to people's homes? They should be throwing all that junk in the recycling bin, so that we don't have to. If someone wants to mail me spam, let them use fedex.
I won't be affected by the switchover, since I already have to walk to a central mailbox, but I can see how it would affect others rather negatively. Hopefully when it happens, my mailman spends his newly found free time actually making sure that the right letters end up in the right mailslot.. They mess that up more often than they should.