Personally I'm fond of MS-DOS because of all the ugly, arbitrary hackiness of it all. It's a beautiful mess. It's also an incredibly lean and responsive OS comp

Personally I'm fond of MS-DOS because of all the ugly, arbitrary hackiness of it all. It's a beautiful mess. It's also an incredibly lean and responsive OS compared to a modern day OS where every keystroke and mouse movement goes through a dozen layers of abstraction. DOS gives you close to direct access to hardware.