Well, I finally did it. And it's great, better than I thought. MacOS has some unix anomalies like when programs are "devices" when you download them and then you have to drag-and-drop them to applications, but it's ok. Also when I start Studio One it says do you want to run this program, "it was downloaded from internet". Well where do you usually download stuff?
I have this as secondary computer (studio/music is the thing I'm going to do), I didn't throw PC away.
Only problem this far is the "displayport wake up" trouble so many people seem to have. Sometimes (randomly) displayport doesn't work at start up, the monitor says "no signal". I have to scroll to different input from the monitor's menu, then go back to displayport and it's fixed. It's not that bad, because this isn't my main computer.