In a world were social networking rules us all, it may be hard for some of us to understand how people don't use Twitter. That's right, not everyone is a fan of putting their personal life on display, even if they'd like millions of followers over night, just by having an account. Yet, just because they don't want to, doesn't mean they shouldn't. One of the main selling points of Twitter is that real people can connect to their favorite celebrities in an instant. Some celebrities are still to hesitant to take the plunge. Here are the 10 Celebrities We Wish Were On Twitter.