Can you explain how home grown vegetables or say sealed hydroponics would result in the deaths of animals?.I agree, the quality of life of animals is not to be ignored. I believe we need to do far more in this area.
I don't see any false dichotomy. If we are arguing between vegetarianism and eating meat, to me its about what causes minimal animal suffering. This may all be futile in the future anyway, since they will end up 3D printing food, reducing the need to kill animals for our Sunday lunches.
As for your last paragraph, the consumption of vegetables will result in the death of animals too. As will road building, travel, etc etc.
I agree that artificially created meat is the ultimate solution, meat consumption without ethical issues.