It's a shame that society doesn't treat parenting (Mothering especially) like the full-time job it is. It's really the most important job in the world, and yet when you're unemployed, the world doesn't look at you the same even if you're working 14 hour days scrubbing floors, cooking, cleaning diapers, etc.
But, I do have to say, that if we say being a mother is a full time job, then working moms are working double shifts.
As a part time working mom, I totally feel like I work a double shift. It's way harder to work part time and parent (at least when the child is young) than it was to work full time with no kids. At least for me.
But, yeah, it bugs the living crap out of me that people think you are a different person when you have a baby and become a stay-at-home mother for a while.
We celebrate babies with showers, and cards, etc. Heck, the people I WORKED with threw me a shower and were more generous than my own blood relatives were. But it's presumed that babies change you and if you stay out of the workforce too long you aren't the same person.