Which is okay. Focusing on a happy life is imho better than to strive for becoming an efficient worker in some way or another. There is a lot more to life than this.
Well, it's not to say they wouldn't be happy with the beetle cataloging. But yeah, you never know how either the beetle catalog or the sonic ring tutorial might positively affect another human being - so they're both contributions. I find that if you're doing most anything in life with true joy and enthusiasm, you're contributing!
I was just referring back to the OP post, where I thought it was describing how humans only have so much time in the world, and focus to use - so are modern time-spenders like video games hogging/stealing (thief) that valuable time/focus or not?
In this instance, did they "choose" Sonic, or did Sonic negate the chance of the same skillset being applied to beetles? Sonic might make them more happy - or maybe they never found out how much beetles would make them happier.