I have Windows and Mint also. (Primarily windows, though that's a practicality thing for me, not a preference.)
- Windows doesn't stay running months on end unless you don't patch. That's not an indictment of Windows, it is just the reality of maintaining a system well in that environment.
- Why do people assume that if they don't experience a problem that the person that does is simply wrong/crazy/imagining/stupid.
- If you don't run Windows routinely and keep it updated (which sounds like the case in the GP), then when you do boot it, EVERYTHING wants to update* and your experience is horrible until it all completes. Also not an indictment of Windows, just reality.
* (unless you convince yourself that you can do it better and smarter than various manufacturers and lock down all automatic updates, which I posit is a bad idea generally for non corporate systems...and particularly those where someone boots into the OS out of protest once in a blue moon...)