I have and use a 2006 MacBook Pro 17" which Apple treats in a bizarre way. Latest version of Mac OS X works on it fine as do things like Photos (which sucks but that's another story) and iTunes.
But they don't support the hardware. It is considered (their word): obsolete. The battery died long ago (Apple actually replaced it once years ago when it swelled up) and needs replacing (the replacement battery also swelled up) and they won't replace it.