I had an old computer and Linux is all that I installed. Not everyone is going to have an extra computer to do that with. However, this computer is more than 10 years old. It was quite good at the time, but it's junk compared to modern ones. Yet, it is more responsive than my very nice modern laptop that's running Windows 10. It's not going to beat a new computer in a race to solve a computational model, but for streaming, browsing, and day-to-day stuff, the lack of bloat means things open quickly and UI elements respond immediately. There is probably a fair number of people with computers they think are useless that would actually work very well with Linux.