I'm not trying to say that it's necessarily better for a kid to grow up with a working mom. For the record, I think the issue is too nuanced and layered to make a sweeping claim like that. However, I do feel like there are pros and cons to being a working mom that are worth considering, and that families that do include a working mom (or, more inclusively, families that simply don't have a stay-at-home parent) should be able to acknowledge that. It's an individual choice (that often isn't even a choice, let's not forget that) that's going to vary from family to family.
Since becoming to be a working mom, I'm no stranger to guilt. Despite the fact that working allows me contribute to our family financially, I'm still kinda hung up on how it also takes me away from my child and benefits me personally. Though if I dig deep (and honestly, not even that deep) I can recognize that there are perks for my son, too, just like there were perks for me when my own mom went back to work after years of staying home with my brother and I. In fact, I would wager that even within individual families, the best-case scenario will vary from year to year, or even month to month. At least, it has within mine.
All that said, from my own experiences of both having and being a working mom, I've narrowed it down to a few key benefits for kids: