It'll continue to be a band-aid, of course. Band-aids are useful.
It's the Japanification of the US economy, including a similar Federal debt problem (which is the single biggest reason the Fed can never raise rates back to a normal level again).
Japan still has a highly functioning country and functioning economy (one of the wealthiest and most productive on earth), even though their central bank policies and debt situation are an enormous mess.
The US has a lot of household wealth (~$100-$110 trillion) that the Fed can debase on a perpetual basis, as a never-ending band-aid. Then there is all the other dollar based wealth around the world. They can run a never-ending $80 billion per month QE program and it'll barely scratch the massive US asset base (which over time, averaged, may well outgrow a trillion dollar per year debasement). Ideally you want to see the US Government bring its irresponsible fiscal situation under control, sooner than later, so that approach doesn't have to go on for 30 or 50 years (but nobody is going to hold their breath for that). The counter is to point out that foreign actors will pull their confidence in the USD during this process (increasing the real cost for the Fed to keep doing it), whether after 10, 20, 50 years - and that may well happen, but it's impossible to forecast when. This is especially true given the currency competitors are all a mess as well, with China overloaded with debt, Japan in far worse shape than the US, and the Eurozone with no growth and their own miscellaneous debt & economic problems.