Yeah, same here. When I ride, it's like my brain is FINALLY busy enough with processing and doing automated tasks(leaning, shifting, braking, looking out for gravel etc) that it can stick to one thought at the time. My mind doesn't jump all over the place, I can finish my train of thought, if I want to.

I think it's because you're so awhere of your surroundings/the road surface/your body, and all the input from the world around you. Man I love riding motorcycles😃