When riding, the only number you _really_ need to pay attention to constantly is your speed, and that's just to avoid getting pulled over. Everything else can be operated by feel, sound, and judgement. Energy management is easy: if you want to go fast, twist the throttle. If you need to slow down, apply the brakes. You also have to learn to ride defensively against other road users but that comes down to vigilance, general situational awareness, and experience. There's no numbers or math involved per se.
Flying VFR is probably similar in a lot of ways. You have lots of visual references to go by and with experience can tell if you're on the right heading, too high, too low, too fast, etc. This is why I haven't ruled out buying an ultralight some day when I'm retired.
But in lots of cases, and especially when flying IFR, you have to juggle a lot of things all at once just to keep from dying. A GA aircraft might have dozen gauges and those are only the most immediately important things to worry about. Altitude, heading, air speed, engine RPMs, hours of fuel, ATC frequencies, etc. Many flight parameters have a current value, but most also have safe minimum and safe maximum values which change dramatically depending on the phase of flight.
Lots of people have the ability to mentally manage all the parameters of the airplane itself and its position in the sky, and also be able to do it consistently and safely. But my brain just doesn't work like that. I have trouble holding one or two numbers in my head for more than a minute. It would be incredibly stressful if I had to hold dozens of them in my head at once and my LIFE depended on not forgetting or accidentally swapping them around. I know my limits and for better or worse, this is one of them.