This article confirms that the planet Jupiter has been struck by a comet or an asteroid. You may think "so what, I'm not moving to Jupiter anytime soon and I don't know anyone who lives there."
But what if the comet or asteroid had hit the earth? Well, it would have been a very bad thing. All you have to do is watch the movies, like Deep Impact, Asteroid, or any Saturday afternoon B movie to understand.
Thankfully, our solar system has a couple of big planets out there that act as magnets to attract comets and asteroids. I mean, think of it this way, if you were aiming at planets, would you rather aim at a big target like Jupiter, or a small target like Earth?
So, we all can be thankful that Jupiter is out there. You know, when you think about it, it's almost like someone designed it that way :)