Sometimes I do think yoyoing is a waste of time though, not going to lie. That’s why a lot of people who love the hobby say they don’t have as much time for it.
You can say this about many interests though. I have a big passion for pool but on days when I’m playing for hours when I could be at the library I am thinking in the back of my head that I’m wasting my time.
Too much of anything is a bad thing. I understand your point tho, it’s just something I’ve thought about as I’ve gotten lost in doing something for hours before when I should’ve been doing something else