We have precisely one Windows system in the house.
The POS from work. An HP EliteBook, with it's cracked NIC port, which isn't considered part of warranty and *why* HP won't be next year's vendor.
As for Microsoft, the only MS system in the house is the one from work. Although, I do keep one bootable under an obsolete version of Windows to patch assorted other systems that I'd rather throw into the trashcan.