it all comes down to what makes you happy, not everyone else. your car is def clean, extremely clean. i can totally relate to what you are saying about having to drive something that nice daily and worry about weather, dirt, idiots, etc. my GT stays in the garage and my 205k explorer takes the day-to-day abuse.
aside from the hood not being painted and the interior needing a vacuum, the 99 looks like a very very clean car. i would LOVE to have it as a DD. IMO, i think it got way to much flak on here. nothing wrong with a clean yellow GT.