>"People are concerned that very low interest rates for the long term will lead to an asset bubble[1]

If people foresee the bubble, why do they participate in it? Why aren't the on the "short" side?

I get bubble mechanics. What I don't agree with are forecasts like, "What about asset bubbles?" Well, what about the income gap from years of sub-optimal growth happening right now? Why does an asset bubble (which have occurred throughout history, regardless of rates) trump that scenario?

The idea of damaging growth now to forestall a possible asset bubble in the future is not a good tradeoff.