This kind of interest is not in line with the norms of a healthy relationship. A good marriage relationship should be built on positive emotions, common goals and positive communication. You can try to introduce some positive literary works or movies to your wife to guide her interests to a more positive direction.
This is an unacceptable and dangerous practice. The risks are numerous. It can cause infections as semen may carry various bacteria and viruses. It can also lead to digestive problems in the baby as their system is not equipped to handle such substances.
This is a very serious and wrong idea. Babies, whether boys or girls, have very delicate digestive systems. Their diet should be carefully selected. Foods for babies are strictly regulated to ensure their growth and development. Any abnormal or inappropriate substances like semen should never be given to them as it can lead to severe health problems and is also unethical.
I think there might be some confusion. 'Cum' is not a common or appropriate term in family stories in a normal sense. If you meant 'come', then family members coming together is significant as it promotes bonding, sharing of emotions, and creating a sense of unity.