I love Valentine's Day just for the fact that I get to run around telling everyone I love them, when I normally can't. I try not to buy into they hype though. I like getting homemade cards and cookies. mmmm
I don't think it's at all odd that you make things for your kids and they make things for you (or even just give, not necessarily make).
So, I think you're fine. Ignore the nay-sayers.