grow up

Why won't some people grow up? I have a friend on a blog who is having trouble with people they can tell her what do to on her own blog and that they have the right to answer questions posed to her? AND then want to get upset when their post is deleted and have the nerve to ask why. This is the kind of thing I see in high school students. Folks, you don't have the right to stick your nose into someone else's business and then get offended when they tell you to back off. Sheesh!