Most marketing and business thought leaders will tell you:
People hate change.
Except about HALF of use love it. Pocket change that is and we have a BIG shortage. You may think, just use Apple pay, or an app or your credit card. Data shows still about half of us use cash for transactions under $10. But due to the shortage; many stores are taking only electronic or exact amounts of cash. If you want to help, take that coin jar to the bank and help the cause.
When in doubt, choose change. (except pennies, not sure why we still have them around)