Money-"printing" creates the need to stash money away, which leads to passive investing since most people who have savings aren't market experts, which leads to perpetual bubbles. There's no option to simply hold money. This investment at least tends to go into profitable things like stocks, but not in a proportionate way. It hardly matters how profitable a company is; you just expect the stock to go up regardless because people are parking money there.

Basically, ridiculous startups and ridiculous corporate projects get funding when they shouldn't.