But note that a key can only be used on one PC at a time, so if you use that key for a new PC build , any other PC running that key is out of luck. Downsides of Using an Old Key When using an older Windows key to activate Windows 10, you may run into complications if Microsoft isn't sure whether you're eligible to update or not. But that seems to be happening less in recent months and years. Don't Activate Windows: Downsides of Not Activating Windows PCs using Windows 10 without activation are branded with a watermark in the bottom-right corner of the screen.
So I decided to change about 5 years ago and I don't think it was a terrible idea just not the right fit for me. My whole family runs macs now, and they all swear by them. I think differently still, as durable as mac is and safer from malware I still think it comes up short for me for gaming (Obviously haha) or when there is a hardware issue, I have been able to learn most fixes for any software and able to diagnose hardware issues.
However like you stated it's an entirely different ball game when the mac has an issue to when a pc does. If there was an issue I could generally solve it and fairly quickly and low cost (If it was hardware or software).
Where as I have had serious issues with several different macs over the years not all mine but family and friends both desktop and laptop both software and hardware related.
The only option when it was hardware then was full computer replacement. Such as in my current situation I need to change the logic board and that costs roughly the cost of a whole new mac computer. So I am facing this dilemma yet again, I am using a macbook pro but it has a serious issue that has ruined several flash drives and an new top of the line sd card but hey that's life and could have happened to a pc as well. However as the macbook I'm using is older and instead of being able to change out the usb ports I have to replace the whole logic board, which to me is pointless and not an option.