Traditions tie a country and its people together to help us remember all that our ancestors have done to help us get where we are today. They're important to cultures. Even if they're all ripped off from somewhere.
That's right. Literally every tradition we celebrate today was stolen. Or doesn't even mean what we think they mean. Basically a lot of it is a bunch of bullshit.
As always, thanks to AuntieMeme for the voodoo she works putting these together.