Here are some more reasons for you James..
OSX is UNIX! UNIX was written by two geniuses from Bell Labs in 1969 and it’s derivatives remain the most popular OS for servers powering basically everything in the world. It is the most installed base platform of any OS ever. 830,000 new Linux devices are turned on every day.
OSX is more secure, there are far fewer vulnerabilities discovered and reported on OSX than there are Windows. OSX is virus and malware RESISTANT. Windows itself has gotten a lot better about security but the problem still remains.
The hardware is better supported – Apple writes software that works on specific hardware that was thoroughly tested by their engineers. Instead of trying to write an OS that works on hundreds and thousands of different components, an drivers to power all of those different devices, apple only has to write a few. DUH.