first, you need to justify why the arbitrary line in the sand with "sentient beings". What you really mean here is "my perception of sentience in other animals". If it was a sentient plant, you would still eat it, because you have a bias against plants.
And since we're on the subject, because you defined your imaginary qualifier as "sentient beings", then you agree it's fine to eat oysters, because they are not sentient.
like becoming the apex predator for the majority of the earth's surface? in terms of evolution, that would be a positive effect of eating meat.
1.5 million years of your ancestors agree.
Where is your evidence of of the dangers of eating soy? or grains?
Why are there no vegan civilizations? Why are there no long-term vegan cultures? Why do vegan parents average lower birth weights than their contemporary counterparts? Why do vegans exhibit higher rates of mental illness? Why do vegans exhibit increases in tooth decay?
The number 1 reason why people quite veganism: HEALTH.
Do you know that every vegan who lived during the 20th century is now dead? must be those dangerous vegetables... And in fact, every single person that ate vegetables in the 20th century is dead! OMG!!!! those vegetables are killing us!