Central bankers can't interfere in the marketplace when you have a limited currency like gold or bitcoin. This lessens the boom-bust cycle significantly. You get periods of rising and falling prices, but prices trend down over time, driven by proper capital investment. Central bankers print money and cause capital to be misallocated, for example into housing, causing prices to rise steadily over time, then fall all at once.
Central banks don't stabilize prices, they just concentrate the natural inflation and deflation inherent in capital markets into certain time periods, resulting in long periods of prosperity, followed by collapse. The more they intervene, the worse the eventual collapse is. This is called "kicking the can down the road", though really it's more like a snowball being pushed up a hill, only to come down larger each time, making it harder to move back up the hill, until one day its so big nothing can stop it and you have Snowzilla rampaging through your cities rolling up first companies, then industries, then cities, then countries, then entire continents, as we are seeing now.