Unfortunately is multibooting something a lot of so called "windows gurus" (which have often never seen any proper microsoft training) recommend. One system for gaming ( a lot of installs, deinstalls, installs ...), one for web/email to keep the others safe, one for office etc.
The most annoying type of windows users are the ones that don't even spend a dime on their OS License and cannot update or don't dare, because wga might kill their system. I have seen friends spend 500 EUR on a graphics card, but nothing on their OS license. If people know you are an IT Pro the most heared sentence on partys etc is "i Have a problem with my computer, how can i fix ..." (feel free to enter anything you like). I have convinced the windows users in my family to buy this licenses ( if you can spend 100-200 EUR per month on games you can afford a windows license ) this has dropped the number of calls about their problems to something near nothing.
Even if it is not perfectly legal (for my S10e) i own a family pack license of my apple products, so i have the right number of licenses.
I have a similar point of view regarding a lot of things (esp. cars): it should work. I know for some people it is fun to assemble/disasemble every part of their car, but i want to get safely from a to b. Some years ago i installed every linux distro i could lay my hands on, installed every software i could found and tried out, but know my quality time is reserved for my wife and daughter. At least 5 colleges have switch for similar reasons to macs. This is more important if you spend your whole day keeping systems alive for other users ( >1000 users client server apps ) By the way : why doesn't anybody use the online help anymore, it's so much easier to call someone then to read the same advice for yourself!
I don't disregard your point of view, but for me "beeing productive the easy way" is what i want.
UNIX is user-friendly! It's just very choosy about who its friends are, and even best friends fight sometimes.