[MaRiO89]

I agree with what Ross said. I didn't explain it as well as i could have but the distance between yourself, the subject and the background plays a role in how blurry the background becomes. With a faster lens though you can create those types of images easier and they just look better.

As i said, a 50mm equivalent prime lens will make you a better photographer and your photos will improve an awful lot. You need to think about your positioning more etc. The only lens i own for my Nikon 1 system is the 18.5mm (50mm equivalent) f/1.8. I sold the kit lens and i do not regret it. The focal length is perfect for most situations.