I think I use a bit of everything now.
My two big desktops (office and home) are Windows 10 and it has been generally excellent, especially compared to Win7/Vista/XP. If you want to do strange things (lots of screens and memory) it is far easier as the range of support for extras like multi-port video boards is in a different league. They have eroded a lot of the stability benefit that Apple had over Windows in the old days.
I do however still love the iPhone/iPad/Mac combo for portable computing. The cross access of content and applications is brilliant (ability to answer a call on your iPad or Mac when your iPhone is in the other room etc) among other things.
I even have a RasberryPi running some nerd things and a box using Linux now. There is hope for open systems yet.
