Hell, maybe you just want it to not break during a long vacation.

Or maybe everything is normal, but, oops, you forgot the last renewal and it stops working exactly the moment you needed it most.

Heck, even "tinkerers" might want it to keep working during a long vacation.

Or maybe it's a normal day, and, oops, you forgot the last manual renewal, and now it's busted at exactly the moment you needed it most.