Why I am a Dallas Cowboys fan.
Mother, Grandmother, Great-Grandmother all born in Dallas County. Me - born in Arlington. Family goes back to at least 1859 in DFW (the date of death on the tombstone of an ancestor in Stony Graveyard in Denton County). It's my hometown team. No other justification needed. If the Cowboys had never won a Super Bowl, and were like the Chicago Cubs for a century, I'd still support the team. The Cowboys are like family - you suffer with them when times are bad, and rejoice with them when times are good.
Nuff said!