I can with very high confidence say that for the average computer user, case-insensitive is basically the only alternative. At least if you don’t want IT and computer support around the world to start going postal.

As soon as someone is at least semi comfortable navigating a unix-style terminal and using a terminal based text editor to at least change config files, case-sensitive starts to become better. And often the more you get into programming, the more you get like Linus here and develop a hate.