In my opinion, children shouldn't have the same jobs as their parents because it doesn't take account of the passions of the children and their dreams.
For example, there is a mother who is teacher, but her son doesn't want to be a teacher because he wants to be a footballer. Do we have to force him to become a teacher when he'll grow up ? I don't think that it will be a good idea...
There is another problem too : If the parents don't have the same job, what job should the children do ?
It's not consistent... I want to be what i choosed. I don't want to be a baker because my father is one. So that's why I don't think that is a good thing to force someone to do something that he doesn't want to do. It will be cruel.
Finally, I think that there is another problem in this logic because if the parents dont have any jobs, what the child should do later when he will grow up ? He will have no money and can't live well juste because of his parents. It's unfair.