Similar story here, though I didn't pay quite as much for my MBP.
So I've been looking at options over the last few weeks.
Apple and Microsoft present similar drawbacks for me - 'very' commercial enterprises, too much bling, too much demand on pc resources for appearance not function, too much encouragement for cloud use. In short, just too much of so much
So I've investiagted Linux based options and found, obviously, that integration/ease of use is the biggest problem - e.g. email/contacts/calendars across a number of different devices.
A Google account solves a lot of that but I don't want to be beholden to another tech giant.
Nevertheless I'll probably go for one of the Linux distros with Thunderbird/Firefox and Libre Office. I'm currently using those apps on iOS at present and quite like the simplicity of function.
Next stop the free world - with generous donations!