Well, of course.  But still, Sontag’s story is interesting.  And I just had a conversation with a good friend of mine who’s also a grad student last night (and a mother) and while she loves being a mom, she’s painfully aware that no matter how supportive her husband is, she’ll do more of the work and time she spends with family is time she is not spending producing great work.  It’s a real tension, and one that men face too, but in much less stark terms.  A review of early Sontag’s journals:

It is in the book’s second half that we begin to see what “ambitious” is code for. We see Sontag, a woman who is interested in her intellectual life above all, become a teenage bride and then a mother at nineteen, only to bail a few short years later. We certainly can’t begrudge her the desire to be free and see the world — that is all any 24-year-old would want. But we do. Her ambitions conflict us; on the same pages where we read of her eminent freedom (as she’s preparing to leave Boston for Oxford) and perhaps feel some empathic relief (she’s been comparing her marriage to a jail for several years) — she’s unsentimental and tearless. Her meals are rendered with more detail than her family. You are sad for Sontag and you are sad for her son and husband — though not in the same way — you want her to pursue her freedom, but you do not want the mother to leave.