I think you’re looking at it the wrong way. If you’re happy using Windows there’s no reason to stop using it. But a computer is capable of many more things than

I think you’re looking at it the wrong way. If you’re happy using Windows there’s no reason to stop using it. But a computer is capable of many more things than playing games and many of us prefer doing those things on macOS. This allows us to have the best of both worlds. If you don’t want it you’re under no obligation to take it.