I am going by the definition of feminism, (as in TED)that seeks equality, not the one that seeks entitlement. As to biology, I believe we evolved to thrive with cooperation, as well as competition. We need both, and men and women although quite different, as most feminists attest, have varying strengths.
Entitlement is the opposite of equality, as it suggests privilege to some and not others. Fairness is the goal for feminism, and a greener world by shared love of life itself, and equal (not unfair) representation. Thanks!