afaik the line of thinking were : religious people were more honest, happily married more stable (ie, your relationship wasn't a source of stress/instability),

afaik the line of thinking were : religious people were more honest, happily married more stable (ie, your relationship wasn't a source of stress/instability), and being a parent made you seem more responsible. Nowadays cynicism has inverted those thoughts: Religious -- hypocrites. Married -- soon will be divorced, may get pregnant. Parent -- how irresponsible for the environment.