She said it, not me. Well, according to reports, she did. Madonna was apparently being interviewed by fashion designer Isaac Mizrahi (no, not sure why, exactly) when she said: "It is a struggle to balance my career with my children. I'm always going: "Oh God, I'm a crap mother". I want to get home and put my kids to bed. And then sometimes, if I'm spending a lot of time with my children, I think: "Oh God, I just want to be an artist". And you know, it's hard."
She also explained that daughter Lourdes finds her mother's fame a little trying, saying: "Sometimes she doesn't want me to come to certain things because she knows everyone is going to pay attention to me and then they'll treat her differently. I took her to school on the first day last year, and all these kids were buzzing around. She came home that day and she was really irritated and kind of bummed out, like people were playing this contest - what would it be like to be Madonna's daughter?"