We re all equal in the sense we re all animals fighting for ressources and partners of reproduction, who prefer to dominate instead of being dominated, even if we have different skin colors or cultural backgrounds.
Not everyone fights for reproduction or resources or care to dominate. Its no longer necessary. Life results from the non-random survival of randomly varying replicators.
Our bodies are just the expression of various genes and its the genes that live onward, not the person or organism. The genes are indifferent to the person or whatever vessel contains the genetic information.
Furthermore, we are not shackled to our genes. We have control over them. Just because you are born a certain way or have a certain problem, myopia for instance, does not mean you can`t change or fix it- in this case wearing eye glasses.
If we just let our genes do what they wish, why should we even bother trying to cure diseases, lessen the impact of genetic defects or wear eyeglasses or contacts?
There is a genetic component in almost everything but that does NOT mean you can`t reverse it or change it. We are not beholden to our "selfish genes" in any way. Just as we can use technology to overcome genetic limitations, we can easily use forethought to choose not to have children. Furthermore, our cultural norms and values and vain desires can also dictate if we replicate. (this is the case for nearly ALL pregnancies)
Human civilization may not have made it this far had we behaved or solely acted according to or on our genetic desires. As Steven Pinker says on choosing to be childless-"I am happy to be that way, and if my genes don't like it, they can go jump in the lake."