I'm with Craig on this one. While its personal preference how many hobbies you have, it's prudent to limit your interests and choose your hobbies wisely. Allows me to have a lot of family time and build" relationship equity" (a term coined on BPL?) with my wife, allowing me to go out more.
Plus, why would you go to happy hour with coworkers when you can buy a barrel aged imperial stout for cheaper, and drink in peace and quiet while reading a book or, perusing BPL...