Because having only half of a printer doesn’t serve any purpose.

PHP: You were a nerd, now you’re just outdated (and/or a WordPress developer).

• Don’t code in a language/style that requires you to write code that makes prefixing necessary - divide and conquer instead
• Readable code and well written unit/BDD tests is much better than separate documentation that will go out of sync the minute another Dev does some surgical incision into the code
• Be verbose if you need to in order to convey the relevant semantics, the characters are virtually free
• Use the casing that is mainstream/recommended by its’ developers for the language at hand

Honey, please fill out these court papers, I need you to change your name to this new ticket number that I’m starting work on next Monday.