Be careful about following these kinds of videos. The guy in that video either is being wildly dishonest, or (more likely) wildly wildly wildly bad at logical reasoning. Actually probably a little of both. Most of what he says is pure non-sequitur. To give you a quick summary, here are some main points: 1.) Dawkins is only saying that we are just machines with no higher purpose than to do what we do, ie. replicate. 2.) This is completely different from the things in your life that you find meaning in, whatever makes you feel meaningful, or things that are culturally significant. 3.) Belief systems do not spread and replicate inside of dna nor in the same way as dna 4.) The popularity of a belief system has almost nothing to do with how closely it represents reality. In short, almost nothing that he tries to link together are even remotely related. I don't think anybody could gain anything by watching it. *edit: by the way, I don't mean that one shouldn't engage in other's viewpoints, I just mean that the guy making that video is either trying to exploit the people who watch it, or at the very most is completely worthless. Either way, it's something to be avoided.