Definitely do not go down the rabbit hole of "Single men raise better children than single women". Again - one poorly designed study reported to the press gets far more attention than the reality - which is that when controlled for factors such as financial stability and community support, the outcomes are nearly identical.

I'm not sure I can name one single, happily married woman. Though I can name dozens of happily married men. I'd love to know who does these studies and what they ask because happiness is pretty damn subjective.