By definition, a parasite is an organism that lives in or on an organism of another species (its host) and benefits by deriving nutrients at the other's expense.
Milk and eggs are a popular food. Thus, humans derive nutrients from other species. Therefore, humans are parasites.
However, if the relationship is consensual, then getting nutrition from animals would be okay in my mind. For example, if an adult individual of another species chooses to directly wetnurse a human child then that is okay in my mind. Similarly, if a human chooses to breastfeed a baby of another species, that is okay in my book too.
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The below Chinese police officer breastfed numerous orphaned infants after an earthquake. I deeply respect her actions. I believe that animals are capable of the same level of compassion.
Milk and eggs are a popular food. Thus, humans derive nutrients from other species. Therefore, humans are parasites.
However, if the relationship is consensual, then getting nutrition from animals would be okay in my mind. For example, if an adult individual of another species chooses to directly wetnurse a human child then that is okay in my mind. Similarly, if a human chooses to breastfeed a baby of another species, that is okay in my book too.
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The below Chinese police officer breastfed numerous orphaned infants after an earthquake. I deeply respect her actions. I believe that animals are capable of the same level of compassion.