Did this for 30 years. Two years ago I finally took the time to acquire the whole thing.

There is no way back. Relaxed posture, no UI elements stealing my focus unnoticed, parallelism (partially): continually "big-picturing" text; speaking with people while typing. The rhythm of this motoric skill and his quite specific form of memory alone, strangely decoupled from and coupled to the other mental processes at the same time, the interplay is simply marvelous.