Old and In the Way wrote:
I think it ties in to their fear that whites will become a minority in the coming decades if we aren't breeding at proper levels. That basic fear might in part be driving their concern with 'deliberate childlessness'. Which means that these same people will be getting very involved with the hetero's couples decisions on family sizes in the future. It wouldn't surprise me if they start pumping up the rhetoric and provide tax incentives to get the US birthrate for white folk increased. The Nazi's were also concerned with this issue, IIRC.
While I don't doubt that some conservatives see this as a possibility and a threat, I don't hink that's truly what's behind it. I think it just goes back to a Puritanical notion of sex as something sinful to be tolerated only within the context of marriage to produce children as commanded by the Bible. They want society to reflect this religious view. Intentional childlessness implies that any sexual contact will be strictly for fun and thus intentional childlessness in married coouples becomes a corruption of the sacrament of matrimony. Naturally, this applies even more so to gay marriage (or any sort of gay civil union, for that matter) which would thus become doubly abominable to them.