Every year that we've hosted Thanksgiving for the past 25 years, we get a pumpkin and an apple pie. The only people who will actually eat the pumpkin pie is my DH and MIL. My kids hate pie. I prefer apple pie. MIL doesn't want to bring any leftover pie home with her, which is fine (she's an insulin-dependent type 2 diabetic). So I end up throwing out 3/4 of the pumpkin pie every year.
This year, our guests will include MIL and 2 of our friends. The 2 friends are a married couple, 1 of whom has celiac disease. In addition to the no gluten, they follow a keto diet (which has worked out very well for them, the husband has lost almost 100 lb on it). The friends are bringing 2 keto/diabetic friendly/super low carb/no gluten dessert - a fudge brownie and a pumpkin pie-flavored bar/cake thing. We're also going to roast marshmallows outside in the fire pit after dinner. There will also be ice cream available.
You'd think that the earth had stopped turning on its axis with my DH informing his mom that we wouldn't be providing pie.
Could she bring some pie? Sure, she could. But she won't. Yet she'll complain a lot anyway about how we were so inconsiderate for not supplying her with pie.