Tracking your workouts is important for debugging later - if you're not getting the results you want, how can you figure out the issue if you don't know what you've been doing?
If your goal is "general health" and you're doing okay, you're lucky (or you should set harder / more specific goals!) But as an example, I thought I was eating well, but when I started tracking my calories for a few months, I realized I had underestimated my daily calorie intake by about 400 calories, and I was still eating way too many carbs for what I considered to be a "low-carb" diet.
I'm also on Fitocracy (was using spreadsheets before) to track weightlifting - tracking is a necessity for lifting IMO.
If your goal is "general health" and you're doing okay, you're lucky (or you should set harder / more specific goals!) But as an example, I thought I was eating well, but when I started tracking my calories for a few months, I realized I had underestimated my daily calorie intake by about 400 calories, and I was still eating way too many carbs for what I considered to be a "low-carb" diet.
I'm also on Fitocracy (was using spreadsheets before) to track weightlifting - tracking is a necessity for lifting IMO.