If you're on any Windows version other than 7, upgrade. Definitely. No question.
If you're on Windows 7, you should probably upgrade now. The horror stories about 10 are somewhat exaggerated in my experience, I've had no issues personally after a clean install (I did have some problemts with Windows not auto-upgrading itself because "there was an error" but managed to sort it out through a clean install) and since then I've not looked back.
If you're on Windows 7, you should probably upgrade now. The horror stories about 10 are somewhat exaggerated in my experience, I've had no issues personally after a clean install (I did have some problemts with Windows not auto-upgrading itself because "there was an error" but managed to sort it out through a clean install) and since then I've not looked back.