Hahha sorry, I know exactly what you mean. Personally i find making comments harder and more exhausting than posts, but I've always been rather antisocial. Damn I participated in the beast challenge on Whaleshares, and 50 comments daily is just incredible.
In psychology I believe his is called sunk cost fallacy, you can look it up :) Everything will be much more clear, we're almost all like that.
I'm actually going hrouh a burnout phase right now, but I know it's just temporary. However, that also means I still haven't found a healhy balance. You're doing awesome, especially with how consistent you are with drawing ^^