It's mainly for multiple people in a household to back up to one location, especially if some have laptops that are often not on desks. Those Airport APs used to also let you attach disks for this. You could even do it over a VPN.

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stingraycharles 41 minutes ago | parent [-]

I so miss these Airport APs, I really don’t understand why the product line was cancelled, it was perfect.

	▲	mahboi 28 minutes ago \| parent [-]
		Same, I still have one for random purposes. Still the easiest and most polished router/AP, has lots of features.