With that logic, since I live in San Francisco, I should have a 49ers logo, or the SFGiants logo, but I happen to love the Raiders across the bay, and been an ardent Raiders fan for most of my life.
Instead, I chose to use a logo that is Japanese, which... amazingly, I Have never been there nor born there.
I like it, because my ancestors came from there, (by way of Hawaii) and if you look at me you will see that I am Asian. I do have a photo of the Raiders in my sig, cause its seasonal. When Football season is over, I expect I will change it..(unless by some chance they win the Superbowl than I will wear it longer)
I can see that you would wear the San Diego team logo, to show you are in San Diego, and I guess that cool...but if you were a die-hard Steelers fan, lets say, why not show your team pride?
I guess its possible that if you wore that, people would think you were from PA. But I have talked to Raider fans, who were in New York or Maine...cause they are every where. Anyway, that's cool, but it seemed odd to me that you wear the Chargers logo to identify your location. But the fact that you are unhappy with them, and still wear the logo is a little puzzling..but I get it. There is nothing else to show your location, unless you had a San Diego sign..itself. (Which you could probably google and use, if you wanted to, as a suggestion.) Like below
![](https://www.colourbox.com/preview/4166664-san-diego-california-highway-sign.jpg)