I majored in history (which is about as useful as majoring in general studies lol), also dropped out after a few years and is super helpful as a software developer... Anyways what I teach my kids isnt the fantastical parts of Santa, any of that but the history of how that came about.
Im a Christian but even with that I want to explain to my kids why I believe that stuff, but Im not going to force it down there throats. I basically believe my job as a parent is to educate them, and do my best to live in a way that I think is right as an example to them, but ultimately let them figure out life and their beliefs and I will just love them and do my best to be there for them along the way.
Probably a long winded answer (Im very good at those!)