Same here. Ever so glad this house became Microsoft-free several years ago. Looking forward to the release of Linux Mint 18 (already in beta), which will be a long term support release, supported for 5 years.
http://blog.linuxmint.com/?p=3038
Many people have an older pc in the attic, bogged down with Windows cruft. Try putting Linux on it, it's amazing to see the pc run at a decent speed again.
Admittedly there are some things to get used to. For example, it can be very disconcerting to choose 'shut down' and have the pc power off immediately. None of that "Shutting down... installing update 1 of 27... do not switch off". Yes, you'll really miss that!!!