redkim,
I spent alot of time with conservative Catholics for several years and they spend an inordinate amount of time obsessing about things like “authentic femininity” gender roles, working moms, the threat of feminism, etc, etc.
I know you are not saying women have to stay home, but plenty of conservative Catholics, including a lot on this site, do say that very thing. From personal experience, I can tell you that working mothers are sneered at in many conservative Catholic circles.
As for the studies that show SAHM familes are happier, could you please cite a source for this? Frankly I doubt one can have an objective study on this issue because both sides are so passionate about their view. In my own experience I haven’t perceived any difference in SAHM and working mom families. I know well-adjusted children with working mothers and messed up brats with SAHMs. And vice versa. I think the happiness of a family more depends on the moral values the parents impart to their kids, how important GOd is in the family, and also whether the parents are doing what they want to do. If a woman is a SAHM and loves it, then most likely her kids will be happy too. If she’s a SAHM but doesn’t want to be, that’s going to trickle down and have negative effects on her kids. Same with working moms. Every family is different, which is why one-size-fits-all gender roles make no sense.