Or, like most people, you can just say, “Oh, ok that’s interesting” and go on about your life.
I think people are threatened by the whole selfish gene concept because it talks about human beings in the same abstract way you would talk about any other machine. Evolution has shaped us for a variety of functions, most of which serve the needs of our genes and some of which incidentally lead to love, hate, poetry, the Japanese Tea Ceremony, and great works of literature like The Lord of The Rings (sorry George, I just had to throw that in for your benefit) ;-). If you ponder it too much, it can make life feel empty and pointless, but in general the intellectual understanding doesn’t reallly change the color of the experience much, and when it does it can just as often be in positive as well as negative ways. It’s like all the hand-wringing of believers about how empty life will be if they lose faith, which generally doesn’t manage to persist for long once they do and life goes on feeling pretty much as it did before. I don’t necessarily concede Dawkins is 100% correct about everthing, but the general outlines he gives of how evolution works is pretty unassailable, spandrels notwithstanding. Still, when I came to believe that I didn’t suddenly feel like a mindless “vessel.” Scotch and sex and chocolate; good books, good music, good conversation; my friends, my wife, my little girl. All of these things are just as good and just as beautiful now as they were when I gave the credit for them to some vague deistic concept of God instead of the mindless forces of nature and blind chance.