There is a strong argument to be made that we
are at a decision point on vegetarianism. Of course we'll only know for sure in retrospect, but
* Vegans and vegetarians are growing groups, especially among the young.
* Food technology is improving and making it easier and easier to not eat meat. There are a few startups in this area, such as Impossible Foods, that may revolutionize how we eat.
* The world is becoming increasingly aware of the risk of climate change, and that consuming animal products is a significant factor.
* We have plenty of solid scientific evidence showing people can live healthy lives without eating meat, removing the "we need it to survive" argument. (There is also some evidence that eating less meat is good for you, but there is a lot to debate there.)
* Legislation is moving more and more towards protecting animal rights, even if we have a lot left to do.
So yes, I think the top comment is right. People eating meat today will be judged poorly in a few generations' time.