Well I already talked about how most Americans have money in the stock market, so there is that immediate benefit of seeing your savings increase. But there is also a line of logic that goes like this:

An economic depression is bad for everyone. Therefore avoiding an economic depression is good for everyone. Quantitative easing has been shown multiple times to alleviate / avoid massive economic downturns. Therefore QE is beneficial to all.

>Well I already talked about how most Americans have money in the stock market, so there is that immediate benefit of seeing your savings increase.

This is inaccurate. Your savings don't increase until your portfolio is liquidated. If it's liquidated at a time there is blood in the streets, you might has well have taken everything out ahead of time, paid your taxes and been done with it.

The only reason it's "good" to avoid Depressive price movements is because every single academic has demonized the creative destruction resulting from pruning overly wasteful business models. It's unthinkable that people should have all their money anywhere else but in the hands of people virtually guaranteed to not be interested in improving your local community.