Yes, after having a baby, almost buy everything because of the baby - need a larger house, a maid, a lot of baby stuff etc. When the baby grows up, need to pay more and more, to provide better education, join a lot of extra-curriclar activities, develop different skills, and most of all, need to sacrifice a lot of our time and energy. Yet life is more meaningful and happy and we get high satisfaction when seeing the baby growing up, which is not measureable.