
Brandon seems to be fairly ambivalent. Seeing as how his significant other isn't properly equipped for birthing and adoption is hard, he doesn't really feel like bothering. Also, he's not sure his raising a kid would be a very good idea (though he seems to be doing well enough in Kearny 'Verse).
Max is too neurotic to try breeding. He can barely handle himself sometimes, so trying to care for spawn is just right out. It'd be a Very Bad Idea, success in Kearny 'Verse notwithstanding.
Lil' Max currently assumes he'll probably have kids 'one day' as that's what people seem to do. Nevermind the fact that deep down he's actually not interested at this point in time, nor is he really sure he'll be interested in the future.
Ryan possibly shouldn't have spawned, but oops. The Trio turned out fairly well, regardless of his hand in their upbringing, or lack thereof. Given the chance to participate in the actual raising he would've done his best, and probably he would've been good at it. Jerry did a good job helping with the youngest, at least, but has no chilluns of his own. That he knows of.
It's possible that Drew is equipped to carry children. The Telmeri are weird like that. Though I think if he were to get pregnant he'd freak out at least a little. I kinda doubt he's ever seen a pregnant male anything. Really, he doesn't worry about it right now, as his people only spawn after adulthood and he's not 'of age' yet, so the equipment should be nonfunctional.
Taran hates kids. He won't breed unless he somehow manages to get Drew knocked up. In the unlikely event that this happened, he'd flip his shit hard, and the spawn possibly wouldn't even make it to birth.
Chad, too, hates kids and will not breed. No amount of whining, begging, threatening, etc will change his mind. Also he's too smart to be oopsed.
As far as Argon is concerned, the family line ends with him. End of story. He spent a good portion of his life raising his sister practically on his own, and that was more than enough, thank you very much. Of course if Sylvie has children, then the line can continue under a different name. That's fine too.
Nic is pretty sure he wouldn't mind being a father, but considering he's with Argon, that just won't happen. He accepts and is fine with this. Besides, he can have all the Kodak moments he wants helping out with Sylvie.
As for Ozoka and Shiro? With Shiro's health problems and 'Zoka's mental imbalances raising children would just be cruel. It's a sort of unspoken agreement between them. That and 'Zoka is Too Damn Horny to be around impressionable children.