But have you any decent reasons for preferring Linux
Oh yes. Linux (Unix) is extremely powerful. (It is often said it is really just a kernel and its processes.) The Linux kernel is very modular, so it only uses what you need. That makes your OS use the resources of your computer much more efficiently. You can choose a version ('distribution') to your taste, but if is not a commercial one it probably won't have any of the nonsense you get with Windows, for example. And even if it does, you can easily disable them. None of this rubbish with 'applications' refusing to delete themselves.
You have a massive choice of applications. But for me the biggest selling point of Linux is bash -- the shell. That is so immensely powerful, and I often write scripts that do *exactly* what I want. So, for example, I have a script to download the current quote for the shares in my HYP, for example.
Furthermore, cron, the system scheduling service, is incredibly powerful. I have scripts that download data, scripts that massage data, and scripts that push data out to other systems I have (my main 'server' is a machine that is always on and is in my garage where it doubles as a heater!). I tell them what to do and when to do it and it will keep doing that (like a robot) until I say otherwise.
So in short, Linux puts ME in control. I tell it what I want to do, and I use it to manage my life my way, not the way some multinational corporation would want me to do.
Linux is like Brexit -- take back control. (Why did I say that? What an idiot!)