Children of unbaptized parents can be baptized for their parents by proxy (or someone else may do it as well), as well as do sealing for them. It's up to the parents waiting in the spirit world to choose to accept these ordinances for themselves, however. And yes, you will see your family in the afterlife whether or not they are sealed to you or each other. If they choose to not accept the sealing, then you may be sealed to an ancestor who does during the Millennium time.
not always, but sometimes parents are in competition with their children. Its not healthy, but it happens
That depends on their parents.
That depends entirely on the parents and the ages of the children. You will have to speak with your parents about that.
they dont have to it just happens that way. no legal reason.
Children can get in bad situations. If they are in danger, the parent would not know where to go. Adults can take advantage of lost children.
Parents are completely responsible for their children's wellbeing, so it's parents to children.
Yes, it happens infrequently but it is certainly well-documented.
If the children are under legal responsibility age then the parents should most definitely be punished for allowing illegal activities, but if over this age then the culprits should be punished themselves as is what happens.
Yes, anyone, even an unbaptized person can baptize in emergencies. But if it is not an emergency then the child should be baptized in the Catholic Church. If the Church denies baptism, then it should not be done.
If the child's parents are no longer in the legal picture, then there are steps to follow in order to adopt the child. Many foster children are in foster care while their parents get education, jobs and/or get off of drugs, so the child or children are not available for adoption.
They would have gone to their closest relative, and if there was none, to an orphanage.
Could cause some problems for both taxpayers that are involved in this matter.