Initially, Teal'c assumed that the warriors of the Tau'ri lived apart from their families, perhaps for safety or custom. Popular media told him otherwise, but DanielJackson had spent considerable time explaining why that was an unreliable source of intelligence. CaptainCarter had helped.
As he became acquainted with more members of the SGC, he realised that they did not have wives or children at all. If messhall gossip had any more credibility then television, it certainly wasn't because anyone took vows of celibacy.
When GeneralHammond told him about the Tau'ri military, and the implications of the word "classified," Teal'c wondered how this world had survived as long as it had. He was glad that their leader, at least, had someone he fought for.