You like to talk and while you have writer's block, you never seem to have talking block. You think like lightning and words are always available. The alternatives to talking are slow in comparison and include writing, typing, sign language, and morse code. You look at a keyboard and say "no thanks" (But the smart phone looks very appealing.)
Since the average human hand-writes at 31 words per minute for memorized text and 22 words per minute while copying, writing is out of the question. Much too slow.
An average professional typist types usually in speeds of 50 to 80 wpm, while some positions can require 80 to 95 and some advanced typists work at speeds above 120 wpm.