this hypothetical best case is an exception to the reality of factory farming and animal "products" included in most dishes ("1% milk powder"). And in even then it would still include animal suffering. For those not too set on their habits, considering the arguments in https://veganspeak.info/ (e.g. #29) might be inspiring.
It is a personal decision in the end, our society allows for mass-producing and killing living beings despite better alternatives. As with other personal choices that are harmful and arbitraty, this is not something I see as worthy of further appreciation, or beneficial for further discussion.