Well, isn't there a point in getting a life as an alternative to Twitter as well?
I'm not sure what you mean.
Knowledge, information and shared experience is
precisely what I enjoy in life - learning new things, engaging with other human beings, seeing what the world's up to. Tiwtter facilitates that, a little.
I love trivia, minutiae, ephemera. I love talking to other people about what they find interesting, what films they've seen recently, what's upset them, or intrigued them, or filled their bellies with joy. I love overhearing snippets of conversations between strangers about things that I'm interested in too - those people often aren't strangers for much longer! I love learning about new bands, new designers, new authors. I love jokes. I love politics, and current affairs. I love gossip, sometimes - especially if it's about academics, scientists or porn stars. I love facts. I love little snippets of information that make me smile, or frown, or think about the world in a different way. I love being cheered up when I'm down. I love being angered when I'm complacent. I love the fact that there are 6 billion people on this planet, all of whom are endlessly fascinating if you just ask them the right questions and are willing to be open minded about the fact that other people's interests differ from your own. I love the fact that other people's interests differ from my own - and I love the fact that once I know about other people's interests, sometimes they stop being so different from my own.
I love sharing. I love showing people the interesting things I've stumbled upon on my daily meanderings through my life - music, books, exhibitions, tv shows, products, websites. I love communicating the things that astonish me, annoy me, amuse me. I love showing people this cool little image, or that caustic little article. I love showing people how stupid I think that guy is, or how smart that gal is. I love the fact that sometimes, people say "Thanks! That's made my day!".
That's what Twitter's about, for me. I'm an academic. My whole career, really, is based around finding stuff out about things I think are awesome, and then telling other people about that stuff. I love that attitude - "Hey, look at this. You might think this is interesting".
You might as well say "isn't there a point in getting a life as an alternative to the JREF forums?". This
is a life. Who are you to say it isn't?