Sinning, as Jesus and the church say, is good. Turn or burn Christians.

[Greatest I am]

The survival of the fittest is described in part as the ability to reproduce.

Cooperating with the women is good, but our instincts want us to prove our fitness by competition.

We will not go look for an adversary, but will certainly fight when someone else comes by to compete for our woman.

Regards
DL

Seems to me like people get up to bad thought and bad action even when there aren't any sexual partners around, and even when we're already squared away on that count.  
While the concept of sin is still intelligible and present in this context, to me, it sounds as fanciful and silly as the christian contents of the same.

??

There are no evil or sinful sexual fantasies if it is consentually based.

I cannot speak for the other type.

As to your understanding, not surprising. We were more in competition for the supremacy of ideas that cooperating.

As a Gnostic Christian, I find it fairly easy to see and use analogues terms between the various ideologies and theologies. Sin, crime, evil, bad, --- while each has it's specific definition, when I balance things out, they are all on the same side.

Perhaps, and I hope, that that penchant is what made the older Gnostic sects more moral than Christians as it allowed us to see Yahweh for the prick he is.

Regards
DL