Comic Relief?

Watching the movie I noticed some comic relief. I personally didn't care about it. I wouldn't care if it had it or if it didn't. However Now that I think about it. I think it would have made the movie a little scarier. For example, when the mohawk dude and the glasses dude(I forget their names) went to the head/tomb room. They ruined the scene. After all that suspense building, mohawk dude ruined it with his tobacco. Then as if that's bad enough glasses dude treats the hammerpede(worm thing) like its some puppy. Without all this, it would have made the scene so much more suspenseful and scarier. Don't get me wrong, I loved Prometheus. But I think the comic relief was a little unnecessary since this is a horror/thriller that's rated R.