I have a machine that's quite old, and doesn't have some CPU feature that's required for Win 10. But it STILL tells me to upgrade, then when it finishes downloading, tells me that was a waste of time and bandwidth.
It is. Even when you DO manage to install it, you've set yourself up for the endless stream of patches that inevitably follow any Microsoft product. I remember the days when a Service Pack was a major event, but that merely shows my age..