[msandford]

If a year's buffer is 20k (rent, utilities, car payments, insurance, etc can total $1500/mo pretty easily) then 2% inflation (and basically zero interest) means that this buffer costs me $400 a year, or over $30/mo. That's a non-trivial carrying cost, $30/mo can buy me substantial, actual real things.

I might not care too much if it was $0.50 or $1 per month. But quantitative differences eventually become qualitative ones, and at this point it's not just some tiny abstract amount of money, it's real consumption that a person has to forego every month (or day!) for the sake of not getting financially ruined the first time a big unexpected expense comes up.