Stability is probably much (much) harder to achieve than either growth or decay.

The measures of economic growth are not perfect but even something like improving a product or service is, in a very real sense, economic growth. Are you asking whether every such improvement should be matched with a corresponding degradation?

Personally, if you're happy with your situation, you shouldn't feel compelled to constantly improve it. But then, if you need or want to protect something (e.g. yourself, your family), a certain amount of {slack / profit / extra resources } is necessary to weather unknown future adversity. And a growing capacity to handle such adverse events is as important as the things you wish to protect and preserve.