I'm under no illusions that Linux is a viable alternative for everyone, but if you're just using your computer as a web terminal and light gaming system, a decent Linux system + Steam makes for a very usable option these days.

I have exactly one computer in my house that has Windows on it. It was provided by my employer, and I turn it on maybe once every two weeks or so, for special-purpose activities that can't be done on my Linux laptop. And most of the time, for most activities my Linux laptop is the clearly superior performer - it's not even close, despite their similar hardware specs.

I don't think everyone should - or can - switch. But if you've got an old beater laptop gathering dust, try popping Ubuntu or something on it, see how it performs. See if it's something you could legitimately switch to full or part time.