The big problem is that fridges are not a standard size, and hence the spaces in kitchens are not a standard size. So there's a good chance when you move it won't fit (ours only worked because it's so small - which also made moving it not too onerous). It's a much better result for everyone if the apartment/house has a fridge that perfectly fits the space.
Also:
>Why would you want to use somebody else’s fridge?
This is a weird question. You're ok with using "someone else's" apartment, someone else's toilet even. But you draw the line at a fridge?
Might be nice to have a new one with no one else's mess, but they do clean up pretty fully when you take out all the shelves.
Citation needed on the longevity of new/fancy refrigerators past warranty. Heard too many horror stories. Even our basic LG had a recall on the compressor that we thankfully weren't affected by (yet) and has an issue with the gaskets not sealing very well all the time.
Alas, it's one of the few models that will fit into our tight space and still give us enough space (it has the handles built into the door, rather than sticking out another ~2 inches).