Twitter world domination

Alright so I'm pretty sure that all the celebrities have the newish website "Twitter". I can't go to any of my social networking websites without seeing people write "Follow me on Twitter". It is seriously on every website! My question is a simple three letter word: "Why?" Do all of these people want to have the feeling that they're so important and they want the public to know what they do? I do have a twitter account and I do go on it every once in a while. I see that i get new followers every time that I get on. I kind of have the stalked feeling but then again, they're probably people that I don't know. I only know a few of my twitter followers. It seems that just about the whole world has twitter! Whatever happened to just calling a friend and ask them what's up or sending an e-mail? I am one of those people who just gets my land line phone and picks it up to call any friend. I hate it how some people insist on themselves on twitter. It seems like they want the world to see how great of a life they have. Or it seems like they want to feel like they have friends. I'm not saying all of them do. I'm saying that it just seems that way. I usually "tweet" about making youtube videos and occasionally when I'm upset about something. I don't brag about my "fabulous" life on it. But that's just me. I do find it nice to hear from my friends once in a while but I hate when they over exaggerate their lives on the internet. In a few words, I think that Twitter.com is not necessarily a useless website, but I think that it could get a few improvements and people should not use it to brag about the life they wish they had.