The Sad, Beautiful Fact That We're All Going To Miss Almost Everything

I'm curious what the community thinks about this especially as entrepreneurs and developers/designers.

I spend a huge portion of my time learning new languages, tools and technologies that fitting in fiction/non-fiction books that do not directly relate to building a business or learning a new technology is extremely difficult. (e.g. I've been reading a US history book for a couple of months now)

I'm sure people on HN have interests in a large variety of topics, what do you do to cover all of those topics? Or __do__ you cover all of those interests at all?

Do you just pick a couple of interests and stick to them or do you dabble in many different ones and only dive in deeper if you get "bitten"?