YABU! Twitter is great. But, unless you're following the 'right' people, you probably won't get it.
It's like being in huge pub, where you're privy to all kinds of conversations. You can join in or just listen.
The key to making it work for you is in the people that you follow.
Don't just jump in and follow a load of celebrities. They're (mostly) on there just for self-promotion and you will get little of real value from them. There are exceptions, and some of them will reply to you and/or are very funny/entertaining and work hard to make their tweets engaging.
Follow news sites, sportspeople, politicians.
There are also loads of MNetters on there. If you have 'friends' on there, then it's a very fast-moving conversation - the pub analogy works even better here.
And you'll find that people post links to all kinds of things that are funny, informative and useful.
It's definitely worth exploring. Try it by following a few MNetters - have a look at the people they're following and follow some of them as well.
I'm on there as @TheRealBIWI - you'll see loads of MNetters in my followers that you'll recognise!