I root exclusively for the Cowboys.
When I was a kid in the 70s and afterward I had an AFC rooting interest in the Oilers are a secondary team. Once I lived in Houston in the 90s and beyond I couldn't root for the Texans because the fans in the Houston area spewed so much Cowboy hate that it became unbearable. I should like them because of their players but couldn't do it. So now its just Cowboys.