And thinking is often too slow for playing.
Now, obviously, we have to think and occasionally look at our hands when we play. But we often watch our hands because we lose confidence in our memorization or technique. We end up analyzing our playing, which distracts us from directly playing.
When we stop relying so heavily on sight, we begin to trust our muscle memory, allowing us to listen to what we are playing. Feeling and listening are instant, much more accurate and direct than sight. You are more connected to your instrument.
You can do it with some training & guts
Looking at Hands While Playing Guitar = Thinking
Looking at hands = thinking; too slow for playing. Feeling and listening are instant, more accurate. You can do it with some training & guts