just because you lost the ambition in your career,

it does not mean you are a successful mother. I realized that motherhood is the last resort (comfort)for women who have failed other persuits. I bet if mothers have to be frequently tested on their quality of motherhood, many women will back off from it too! What will be their claim of success then? How about 'my greatest success was that I got born as a human being'? Now that was a true competition and it was a real success, I agree!