"When you have a population of parents that do not consider you within the Christmas season maybe it's time to rethink doing a Christmas season with the kids. Parents are showing you that they don't consider Christmas as a time that has a single thing to do with their provider so why not believe them and honor that?"
Because it's about giving. It's not about "payback" for a gift you assume you WILL get. That being said, I do get my feelings hurt that they don't see it the same way I see it. However, I would not just think along the lines of "they're not going to give me a gift, so I'm not giving them one."
For me, only one family did not give me anything.
In my opinion.