Like I said, I know that it's a hardware problem and I know you have a perfect home button, but I'm betting that a lot of people have this problem and it probably annoys them from time to time but MOST people won't go to get their iPhone replaced. My brother said that his does it too, but it's not a big problem for him.
Apple could quite easily fix EVERYONE'S iPhone (no matter if it's broken or not) by releasing a software fix for the situation. It would be easier and more cost effective than replacing the iPhones that people bring in (which wouldn't be all the iPhones that have the problem)
Rememer the proximity sensor issues? I never once had a problem with my proximity sensor, but Apple changed the intensity in iOS 4.1. I never had the problem, but hey I STILL don't. However, a lot of people had the HARDWARE problem but instead of replacing all of their iPhones, they figured out a way to solve the problem with software.
While I'm happy that your iPhone is perfect, please don't shrug off the idea of Apple fixing something for those who DO have the problem because it won't affect you either way.