I hated the idea of twitter for a long time because I thought it was the shitty part of facebook (incessant updates from people whom I don't care about) x 10, because it's just a feed.
But since I started really getting into it last year, I've become so much more knowledgeable by following the best entrepreneurs, VCs, anyone with interesting insight. It's a surprisingly pure channel of news/knowledge if you use it correctly and not go on a follow spree.
It's definitely not the place for social networking as far as communicating with friends/family goes.