Being born with a shell on your back is pretty much the best.
All you have to do is look around you to see that everyone else wants one of their own.
There are so many shell-shaped structures in the world!
Your large shell-less assistant even brings some of them home and puts them into your outdoor enclosure….clearly forgetting you already have one of those and it is sitting right on top of you – just above your legs, in fact.
Of course, when it gets cold, or hot, or you are just tired of the constantly-lurking paparazzi, it can be nice to have a place to retreat to. Here, a second shell can be just the thing!