Have you ever read or watched science fiction? Typically, in the future the most intelligent humanoids are vegan. For example, a Vulcan named Spock was vegan and considered eating animals illogical since it's unhealthy, polluting, and murder.
Humans have decimated over half of the species on earth in the last 100 years, yet very few people talk about it. You might hear a 30 second video on social media. If you're lucky to be around a scientist or animal lover, they will share a video about veganism.
There are over 1 billion cows on earth. Why? Mostly to feed us. However, if everyone was vegan there would be more than enough food to eliminate global hunger. Humanity is extremely unaware and many times selfish.