Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Are Certificates of Deposit worth it compared to investing in the stock market?
Another factor to consider, beyond the fact that growth and volatility go together, is that the times when many people will need to liquidate their investments will correlate with the times that many other people need to liquidate their investments, and such correlation will push down the immediate value of those investments. While certificates of deposit have penalties for early withdrawal, one can establish up front what the worst-case penalty would be for cashing it in at the most inopportune time.  By contrast, stocks offer no such assurance.  Stocks sometimes have weird downward spikes that may be short-lived, but if life circumstances force one to liquidate stocks during such a downward spike the "penalty" can be much larger than on a CD.