Royals or Cardinals?

Growing up on the western edge of Missouri, (Butler) I spent my summer evenings watching and/or listening to Denny Matthews and Fred White on the Kansas City Royals Radio/TV Network.  Yes, I am a die-hard Royals fan.  Now...you faithful Cardinals fans shouldn't get your feathers in a ruffle!  I have to say for you faithful St. Louis followers, I admire you.  Great ball team!  I've even come to enjoy watching and listening to Cardinals games.  My question for you today is can you enjoy both teams or do you draw the line and wear only blue or red?