I don't mind buying an OS every 5 years. I do mind them forcing me to have automatic updates, no control over when they happen, trying to force me to share files with "other computers in your location", demanding the right to access whatever they want on my computer, whenever they want, and demanding I permit them to make copies of my files in the EULA. If it wasn't for that I would be buying multiple copies of win10 for all my machines. Instead I am sticking to win7, downgrading my new laptop to win7 and using the next 3 years to get more familiar with linux, starting with ubuntu - for which my machine has all the drivers and OS image available from the manufacturer.