No worries dear. That is what this forum is for
No, it will never go back to the original shape once you have worn it and the natural bends in the leather occur. They may appear less obvious if you massage the leather. No, I do not store my belts in the original box because it's too cumbersome and I want to grab and go. I do store them in the circular shape (not hanging them). I think I posted a pic of my actual collection and how I store them a few days ago actually....
It's interesting because I never really noticed any of this until you asked these questions. I think part of the reason is because I just enjoy the belt and not stress out so much about this type of wear-and-tear because after all it is just a belt.... it's expensive... but it's a piece of leather. It will stretch, the buckle will scratch, but it's a belt. Period. You will have to get over the fact that you paid a lot of money for something that will get used.... and not stay perfect.... the first scratch will probably really bother you too... but you will still cherish it.