Animals eat other animals because they don't have a choice or the moral ability to make that decision.
They also can't just go down the shop and buy a food that has all the nutritional value they need.
Humans have the ability to not eat any animal products at all and still be perfectly...
And yet you've done no research into what each point was.
These were generally worst case scenarios that we've avoided.
However a lot of them are currently coming true or on track to come true.
Bottom dredging fishing releases as much CO2 annually as the entire aviation industry.
Animal agriculture and fishing is one of the biggest contributors to climate change and habitat loss worldwide.
The two go hand in hand though.
Eating meat is repugnant and meat is a leading cause of climate change.
It is also the largest cause of animal abuse in the world.