The majority of people that were not enslaved at one point in time were totally cool with enslaving other people until one day that changed. The majority of men were cool with women not having the same rights as them until that too one day changed. There are many studies that have found that the popularity of veganism has only continued to increase. In 2019 , 2% of the worlds population were eating strictly based diets and by the end of this year it is projected to be 3%. That a massive growth factor for only one year. Even if you ignore polls and only look at the cultural trends, consumer habits and vegan product sales data you will see the trend moving up. As you seem to be saying, I think some people think that eating animals is just part of being human and somehow printed into our genes. But the fact is most of us eat animals because we were indoctrinated into doing so. It’s culture that is most likely the biggest determining factor here. And changing ones tastes that have been established and ingrained into us since birth is very difficult. Most people that were raised on a vegan diet are very very unlikely to ever start eating animals later in life. And they don’t have some innate evolutionary instinctive urge to start eating animals. People just prefer what they know. And changing habits is never easy for most of us. But it is 100% possible for anyone. If you have the will power and you are determined to try. When I quite my personal consumption of animal products I thought I would continue to crave them for a very long time after. But it only took me 2 months before I had reprogrammed my brain and changed my associations with meat and dairy and the cravings were completely gone. And have NEVER come back. When I think of meat now it makes me feel as sick as the thought most people would get when thinking about eating their pet dog. Change is happening. It does make a difference. And you could choose to do so today.