I speak with the most knowledge only to attorneys, but for many heterosexual male married attorneys (particularly the more senior ones), a huge part of their answer about balancing work with parenting would be that they have a spouse who does not work outside the home or who has a significantly less time consuming job. On the other hand, most heterosexual female married attorneys, including the most senior ones, cannot give this same answer because they do not have a spouse who is situated in the same way.
I also think that U.S. society at present (although this may be changing) puts higher burdens/​expectations on women than men for how involved they should be in child-rearing, so even for many couples where both partners have demanding jobs, in most, though of course not all, cases, more of the child-rearing tasks fall on the woman.
I speak with the most knowledge only to attorneys, but for many heterosexual male married attorneys (particularly the more senior ones), a huge part of their answer about balancing work with parenting would be that they have a spouse who does not work outside the home or who has a significantly less time consuming job. On the other hand, most heterosexual female married attorneys, including the most senior ones, cannot give this same answer because they do not have a spouse who is situated in the same way.
I also think that U.S. society at present (although this may be changing) puts higher burdens/​expectations on women than men for how involved they should be in child-rearing, so even for many couples where both partners have demanding jobs, in most, though of course not all, cases, more of the child-rearing tasks fall on the woman.