If all you have is a hammer... I guess every problem looks like a nail.
Windows is best as an end user desktop environment which has the widest range of software support with a fair degree of "out of the box" customization.
Linux is best for web servers, symmetric multi-processing, mathematical processing and as a micro, instant boot OS for, say, your watch or toaster oven or whatever.
Mac OS is best as an "idiot proof" end user desktop environment, perfect for your mom or that play pretend geek hipster who can't keep from infecting their shit box with viruses because they have no idea where they're even at most of the time.
And Android... eh... it's like... over in the corner somewhere... probably eating paste.