It's not fair to blast fans here who support the Spurs purely because of love for a certain player, Tim Duncan or otherwise. I've been to the US many times, though I've never been to San Antonio, you can't call my love for the Spurs fake.
It's not a fault if some fans connect closer to a player's values and essence. It's more personal. I admire diehard team fans with a strong sense of their club's history. But for those of us who can't connect to that tradition, we'll settle for second-best, a person's character. And that's what Duncan has more than any other basketball player today. If he leaves, my devotion goes with him.