Even though I spent my undergraduate years at the University of Maryland. Some sometimes ask, including one particularly obnoxious OCS classmate.
Not that I have spent a great amount of time thinking about this. But this post by Althouse reminded me and I liked her answer. To paraphrase her: I have lived in Austin for 36 years. In Austin the sports teams are the Longhorns. Period.
Besides, I only spent three years at Maryland and the last one was in 1967. And during them I was never very interested in sports of any kind. Attended a few football games, but none other. So the Terps hold no magic for me and they wouldn’t even if the Longhorns played them, which they don’t often.
THE TEXAS SCRIBBLER 
I saw the Althouse post, and yours, and I agree. However…I’ve lived in the Greater Houston area (1.5 hour drive to city center, if that counts as “greater”) for over 30 years, and I have never, ever, preferred either the Oilers or Texans to the Cowboys, for too many reasons to type into a comment.
You and my deceased mother (who grew up in Texas but spent her last years in Virginia) and my mother-in-law (who still lives in Fort Worth) though I think the latter is finally souring on the ‘Boys.