I think I've come up with a good answer to the question isn't switching to a Mac hard?
It's not hard; it's not hard at all. It looks a little different. You need to get used to having the close/minimize/maximize buttons on the top left. You need to get used to having the menu bar at the top of the screen, not at the top of the window. But really, the two operating systems are, for the average user, very similar. Here's my short answer; feel free to use it whenever someone asks you about switching to a Mac.
Switching to a Mac isn't like learning Japanese when you've spoken English all your life. It's more like, you've spoken English all your life, then you move to New York.