The questions to ask are what is moral, what is ethical, what is in line with your belief system, and what seems to make the most sense and cause the least amount of harm? Eat the foods that are in line with your sincere answers.
What does open us is sharing our vulnerabilities. Sometimes we see a couple who has done this difficult work over a lifetime. In the process, they have grown old together. We can sense the enormous comfort, the shared quality of ease between these people. It is beautiful, and very rare. Without this quality of openness and vulnerability, partners don't really know each other; they are one image living with another image.