But it seems like even if I memorize a piece to the point where I can easily write it down from memory, when it comes time to play it, muscle memory takes over and makes it so I'm not "reading" from my head like I want to.So what's the point of all my memorization away from the piano when I ultimately end up playing off of muscle memory and I could have built that up faster by just starting work at the piano to begin with?
In the heat of the moment, and for maximum performance i believe muscle memory is priority. However, if you want to prevent memory lapses and mistakes, then your spatial memory of the keyboard and hands, memory of the score, and audial memory can help to back it up. If you want to get good, you must practise away from the keyboard. Also our spatial and audial memories are much more power than muscle memory, and erodes far slower.
So what's the point of all my memorization away from the piano when I ultimately end up playing off of muscle memory and I could have built that up faster by just starting work at the piano to begin with?
It might be more useful to find your own individual method of creating more secure memorization by using the different memorizing strategies in a way that is most efficient to you.
Can you describe some of these different strategies so I can try them out and see what suits me?