Of course, we do have Apophis to look forward to in 2029. Google it if you've not heard of it. It's more than a little scary - but the Universe is quite a scary place.
It may well be true that this thing is going to miss the Earth completely - and if it does hit, we'll be looking at devastation of cities and states rather than the loss of life on Earth - but the fact remains that this large (by Earth standards) lump of rock from space is going to come closer to Earth than the satellites used every day for broadcasting TV signals around the planet.
I really do love the Universe :-)