OK. Here's my opinion, based on experience and history. I tried to find links to back me up but my Goo-fu is technically classified as "sucky."
Think of the consequences of an inflation rate between 2% and 2.5% as a target. Using the rule of 72, we would recognize that this means a dollar doubles about every 30 to 35 years.
This is a typical working life for most couples, and is about the life of most home mortgages, right?
Lets say you have money to lend to finance that couple's mortgage, and you want a fair return which is a modestly higher-than-prime-rate-of interest, plus the inflation rate. You are happy with that return, but of course you worry about the equity position too, since what good is getting the interest if you lose the principle, right?
So, what does that modest inflation rate do for the parties to that home purchase.
What does it do for you as the lender? Over the life of the mortgage the home rises in value, the payments become easier for the buyers to make, and your risk as the lender drops off dramatically after the first 5 years. Thats a great outlook for you, eh? A good, solid, 30 year investment with little risk during the past 25 years.
What does it do for the community? Home owners feel closer to a community than renters. Homeowners are more stable in the community than renters who are moving in and out. That means more involvement, and a better community for everyone.
Finally, what does it do for the couple? It gives them a family center, a place to raise children, and a place to focus their energies for their own well-being. As pay raises come along, they have more money and can fix up the place, add a room, get some nice landscaping, and generally enhance the value of their home. The home develops significant equity for them, and that equity can bridge them through a rough patch, a bad illness, or a disaster. At the end of their working lives they have a home more or less paid for, worth twice what they paid for it, and probably more besides, if they worked on it.
Consider the same scenario with 0% inflation. Any little hiccup during that 35 years and the whole thing comes tumbling down.
Now, if this does not make sense to you, blame the messenger for not getting the message right. But this is the way American economics has been run from the 1930s to the 2000s. Maybe a lot longer.
You don't have to convince me that some inflation is a good thing...but that glosses over the entire crux of the argument...the debate is how we can maintain that.
And as we continue to pile on debt and devalue the dollar, that is going to get harder and harder, and ultimately impossible.