Just what I said…

But I need a clause… “Only a guy like me would appreciate file extensions…” on a Mac.
File extensions on a PC leave much to be desired, and for the most part, on a Mac too…except for when it comes to applications. For example, let’s compare Microsoft Office (PC version) to the Apple iWork suite.

Word – .docx | Pages – .pages
Excel – .xlsx  | Numbers – .numbers
Powerpoint – .pptx | Keynote – .key

Admittedly, I have Mac biases, but come on now, they make it that simple for ya.