Why is .www deprecated?

In order to answer this question, we must first recall the definition of WWW:

• The complete set of documents residing on all Internet servers that use the HTTP protocol, accessible to users via a simple point-and-click system.
• A collection of internet sites that offer text and graphics and sound and animation resources through the hypertext transfer protocol.

By default, all popular Web browsers assume the HTTP protocol. In doing so, the software prepends the 'http://' onto the requested URL and automatically connect to the HTTP server on port 80. Why then do many servers require their websites to communicate through the www subdomain? Mail servers do not require you to send emails to recipient@mail.no3w.com. Likewise, web servers should allow access to their pages though the main domain unless a particular subdomain is required.

Succinctly, use of the www subdomain is redundant and time-consuming to communicate. The internet, media, and society are all better off without it.