I mean, if words aren’t going to have defined meanings anymore, then I guess you can question anything. But the Oxford definition of normal is:

> conforming to a standard; usual, typical, or expected.

Having a fridge is entirely normal, and to claim otherwise would require quite an extraordinary justification.

If you wanted to question whether people really need them, that would be a much more reasonable line of inquiry. But for anybody posting here to claim that they cannot understand why people would want to have one is frankly not believable.