I've had Windows 10 for precisely four days. I bought a new laptop three years ago, thinking my old Vista one was at death's door. The new one had Windows 8 on it. It was so horrendous that the laptop has spent three years in its case. I plucked up the courage to get it out again the other day. To my amazement it fired up, and even the battery's fine. I had to first upgrade to 8.1, then to 10, all for free, and all's well except that I'm at the bottom of the learning curve. And guess what: the old Vista one's still going strong!