You can't really complain about the post office when you realize exactly how much mail they handle...but I still do.
UPS isn't tops on my list for shipping stuff. They have managed to break or crush just about 50% of the items being shipped to me.
As for the cost not going up for more than the 2 pennies: If they had raised to a round number it this post would have been about how the scheming, conniving SOBs raised the price to an even number because they were too lazy or stupid to make change.
Don't get me wrong, thay aren't perfect but for the volume of stuff they handle I think they do a pretty good job.