What is the most important human adaptation?

"What is the most important human adaptation?" via Science Blogs

From some time several months after birth through about the age of five or six (or more) humans engage in developmental activities not seen (or not as extensive or intensive) in other apes, during which humans learn a number of important things and engage in a number of neural developmental processes.

It is during this period that humans develop their knowledge of the kinship systems they will live with for the rest of their lives. Western populations tend to have poorly developed kinship systems,(my emphasis) so this is easy to overlook, but virtually all other human cultures have complex and pragmatically significant kinship systems, and it is easy to observe children becoming aware of them and learning how to engage in them during this time. It is during this time that human children develop gender identity and gender roles appropriate to their society. They may learn class, caste, or ethnic roles as well. They start to learn the basics of the things they will need later in life, and what they learn is based entirely on what their society or culture requires: Being a blacksmith, a forager, a western/professional, whatever.

Committed lifelong monogamous heterosexual relationships open and supportive of procreational abilities as an adaptation. No religion. No morality. Read on in the link about how culture become the adaptation, not genes.