Over the past months I have seen a lot of threads about grinding towards level 40, collecting all cars, racing gears, horns, paint items etc. I perfectly Understand why people want to collect and complete everything the game has to offer. However, I don't understand why people grind and trade for the sake of it. GT5 is just in the beginning of its life and there are plenty of ways to slowly reach those goals over time. Can someone please enlighten me why it is so desirable to just reach the point where there isn't much left to do besides driving?