I completely agree, but for some people, having a baby is not what they thought it would be and they really struggle to cope. Unfortunately you can't reverse this lifetime commitment (short of giving them up for adoption
) and it makes some people very depressed and they yearn for the life they had before.
Chelsea tries to atone for this by buying H loads of toys and clothes and by reassuring herself that John and his family are very supportive, hence she can palm him off guilt-free at every opportunity.