as a guy who's modeled and built economies for mmos, i can confidently say the more movement and activity in your economy, the healthier your economy is. consistent, steady growth and activity, rather than spikes (unbridled liquidity events) and valleys (accumulation stagnation), is the most desirable mode.

for a real world microcosm view, just look at the last six months of bitcoin activity. who on earth would consider that healthy?