Here is hope that the future realize that the only ethical way to produce food is through methods that neither require land, fertilizers or fresh water. This is also the only way forward if the worlds populations will continue to increase.
Even many of the people who abhor the most to see the death of other animals cannot abstain to admire the beauty of the actions of top predators like tigers/jaguars or octopuses.
Nevertheless, now we are approaching quickly the moment when killing other animals in order to use their body for food or for producing various useful substances is no longer needed, so we should stop this as soon as it becomes possible.
Unfortunately we still need some technological developments for this to become feasible everywhere.
I would like to be completely vegan, but for now there still exist 2 food ingredients of animal origin that I consume, because any equivalent vegan alternatives for them are much more expensive than I can afford.
However, the bulk of the food, which provides most of the energy, can already be restricted to non-animal origins, for everyone, everywhere.
It would be too gross even today for many people if there weren't any people with stronger stomachs around to prepare and partition corpses for them.