I can tell you don't like it because you do not understand what is truly being said. To someone who doesn't believe in it, it all does sound like gibberish.
But if you really want to know what is the reasoning behind this sharing of the belief, ask someone with that belief whom you feel comfortable engaging in conversation with. I'm sure they will explain.
Not all Christians are gonna shove their belief down your throat, you gotta understand that. Just like you would say that not all atheists or agnostics are out to make religious people feel terrible about what they believe in. Am I right?