Comment by rnk

The states switched to the constitution because the confederation was too weak and didn't handle or clarify many important issues. Most of the founders were still around.

https://en.m.wikipedia.org/wiki/Confederation_period. "...could not accomplish anything independent of the states. It had no chief executive, and no court system. Congress lacked the power to levy taxes, regulate foreign or interstate commerce, or effectively negotiate with foreign powers. The weakness of Congress proved self-reinforcing, as the leading political figures of the day served in state governments or foreign posts. The failure of the national government to handle the challenges facing the United States led to calls for reform and frequent talk of secession".