I am from Chicago, live in Chicago and am a lifelong Packers fan. My grandparents were big Chicago Cardinals fans. They hated the Bears/Cubs and were all about the Sox and Cardinals. When the Cardinals left for St. Louis in 1960, my grandparents couldn't stomach rooting for them in another city but also still hated the Bears and couldn't root for them. My grandfather swore off pro-football but my grandma ended up a Packers fan out of her hate for the Bears. There was a hardcore subset of Cardinals fans that eventually just picked another team to follow. So maybe the reasons are petty or stupid why she chose that team but growing up, I was close with my grandma and start watching games with her as a kid in the Don Majkowski days. Been my team ever since. If I am not a true Chicagoan because of that, then so be it.