Just as an aside, Apple still continue to provide security updates for older systems – my 2009 Mac Mini downloaded one the last time I turned it on.
While alas it got security updates the programme I was using on it with my radio equipment no longer supports the version of Mac OS the machine stopped at. I want/need to use the newer version as it supposedly crashes less, and has features I want. Alas Linux proved unsatisfactory as some of the hardware in the machine doesn't work and apple don't make drivers for it.
Windows 10 will run without bootcamp (given I had already nuked the disk) and supports the app version I want.
My 2010 Macbook pro still gets some security updates, alas it's bootcamp assistant will only download drivers for windows 7/8 because that's what apple have decided it'll run.
I could just go and buy a Dell refurb laptop, because I'm not that fussy about the machine itself but the washing machine died last week and I've just bought a new one so can't really go on a spending spree right now.