Meat in our diet. Is it so necessary?
Meat is almost indispensable for those who indulge it. For whatever reasons people indulge vegetarianism, that's good for them. But, many meat lovers are unpersuaded in giving up meat. Meat is irresistible and almost indispensable for some addicts and conventional meat lovers.
Meat is tasty, nutritious and a rich source of rich protein. The grilled ribs Vicky Woods displayed above her article is mouth-watering and appetizing. It can go with almost any kind of meal. Knowing how to cook is still a virtuous and valuable skill.
Not as a professional chef , but just for domestic needs and necessities. That would save a lot of time and money. But, still, meat is the lead component of meals. Some celebrities are leaving meat or meaty meals, not just for dieting and fat reduction, but because of animal-rights sensibilities or animal-rights fundamentalism.
Meat is meat, and many are not going to give up meaty diets for any reasons. But, perhaps, the recent stem cells-based meat could win some converts, as long as it has that juicy, tasty, meaty flavor. If it works, they may be fed to zoo animals, also, saving the natural variety for humans for price reduction.
We feed the cattle on the planet enough grain to support a human population of about 8 billion. The 'efficiency loss' of using grain to grow meat, which we then eat, as opposed to eating the plant products ourselves, is huge.
We are denuding vast swathes of forest, including the Amazon, for cattle farming. There are so many cattle that they outweigh all other mammals on the planet combined by a huge factor (from memory about 10). And we have an increase in problems such as cardiovascular disease which broadly correlates with increased consumption in animals.
Biodiversity will be very well served by a reduced reliance on animal products.
If we are concerned about our footprint on a finite planet we should be less reliant on animal products.
And re your 'evolution' point: if we did this we would generally be healthier and live longer.