I think so many are feeling this to some degree. My little set of reasons (many already mentioned):
1. Many forced to stock up per covid. A lot of the same ingredients. Since we don't waste food we feel forced to use them in 50 ways before stocking up yet again w more then we typically need. Depressing.
2. Folks had a nice mix of cooking and eating out w allowed a mental and physical break (esp for those w ailments). Also eating out inspired home cooking.
3. The shit storm of horrible world events, politics, being locked up and a big one for me, not being able to travel!