One niche iuse is that it lets you legally run macOS in a VM under Linux, I think. Which you might want to do if you have some stuff that only works under macOS

One niche iuse is that it lets you legally run macOS in a VM under Linux, I think. Which you might want to do if you have some stuff that only works under macOS, like iPhone app builds, but you otherwise need or prefer Linux. But they're often all around ok machines for general use too if you're not too price conscious and/or your employer just hands them out to everyone.