Yeah, I tried Twitter too, but so few of my friends use it, it just seemed like a clunkier, angrier version of HN with about half the average IQ points.
All the obvious "blue check-mark" people have zero insight at best. There is a whole weird world of small follower count people on there. Small communities. People with unique ideas. People that will actually respond to replies.
Again, I don't think it an addiction you should necessarily cultivate, but there is value to be had.
And character limits.