Well, what is your humanity? The impulse to breed certainly isn't unique to humans. In all truth, a lot of our base instincts aren't really our 'humanity'. We're just so used to these instincts we've grown attached to them. And I think Breen's right that most of our instincts are holding us back. We would be freer and generally happier without them.Like, let's take the example of breeding. A lot of human beings grow frustrated and distracted in the absence of this for long enough. Take that instinct away, and suddenly that feeling of impotence and unhappiness disappears. And the same thing goes for a lot of instincts; the instinct of seeking company, the instinct of fearing the unknown... in fact most if not all fear is instinctual. And is fear useful? Only marginally.Breen may have thought that the combine was simply too powerful to fight. But on another level, the combine were also a legitimate opportunity for humanity to leapfrog past generations and generations of technological advancement, to free itself of its biological encumberances and cement itself as a permanent fixture in universal goings-on. That wasn't guaranteed, at the rate of development humans had alone. More than likely we would drive ourselves extinct without the combine's intervention. This is what I feel Breen was getting at in his speech on being a collaborator. He doesn't want our species to go extinct, he wants us to embrace the combine and their stable, immortalizing structure.