When people talk on the cases of surrogate mothers,I always care about one point. That is the fact they lose the point of view from children’s stance. It is no wander they do. Because they can’t know the feelings of children until they will be born. But imagine the case you are the child who was born of surrogate mother. Moreover in the case we try to assume the sperm was from a third party. You can have a question about what is different from the case and acceptance of an adopted child. Even if the sperm is from the couple, dependence on surrogate mother means the child is raised by her blood. Furthermore in these cases surrogate mothers may assert her parental rights. There is also danger that operations fall through. Here can’t you think desiring children who are related to him by blood is parents’ egoism? I think relationships between parents and children are decided by not blood relatives but time which they passed together. Children understand the persons who love them and raised them are true parents. So you don’t need to take risks of lawsuits or medical errors. It is wrong we think human can change easily the world created by God. Human knows a very few part of nature. With such a little knowledge we shouldn’t think we can do everything by the power of science.