I wonder how many of the responses here bifurcate by age. The post resonates with me, but I am now in my early fifties. When I was in my 20's and 30's, I would have happily chased rabbits down all those holes, but now that time seems so brutally finite, I feel that anything encouring me to spend time on stuff other than what really matters is a strong negative. (Where "what matters" includes work, family, friends, and recreation).

When friends start dying within 10 years of your age, it's a hell of a wake up.

"I wish I'd made more throw away apps I never use" ... said no one on their death bed, ever.