Its a phase we seem to go through. Same thing with my car when I bought it new, I would wash it every week and park far away from others. I still end up with scuff marks and random dents. After awhile I didn't even pay attention to those things and cared more for the maintenance of my vehicle, rather than aesthetics.
For my Air I spent $100 on the Sena folio case, admittedly it is expensive, but it offers both protection, peace of mind, and convenience to carry it wherever I go without thinking about these things.