One reason most central bankers do not set an inflation target of zero is:

Question

Quizplus · Accepted Answer

Setting an inflation target of zero could cause the central bank to hit the zero nominal-interest-rate bound, which means that interest rates cannot be lowered any further. This can lead to a deflationary spiral, where prices and wages fall, causing economic activity to slow down, leading to further price drops. Thus, central banks typically set a low positive inflation target to avoid this situation.

One Reason Most Central Bankers Do Not Set an Inflation