Highly doubted that I would ever actually do this, but it keeps seeming like a better and better idea.

• what are words?
  • they are complications within themselves
  • they clutter thoughts and ideas
  • although there are countless words, they are still sometimes too specific and detract from actual feeling and meaning
• actions take on more meaning
• allows you to only focus on relationships that "matter", if any, because it's pretty hard to meet and/or keep in contact with others when you cannot speak
• clearer, more focused thoughts
• emphasizes observation
  • you won't clutter conversation with what you have to say, whether good or not
  • gain a better understanding of others
• increased focus in all other aspects of life
• could be a potent symbolic act of penance, if needed
• you must express yourself in ways other than verbal communication, so channeling expression through other mediums such as writing and music becomes more fine-tuned
• could be used to convey extreme displeasure to others, if necessary
• "aura of mystery" significantly increases
• promotes discreetness and confidentiality
• possibly helps to understand oneself more
• less distraction (talking does, indeed, take up a very large amount of time)