In 30 years or so, I believe we will look back and be shocked at what was the accepted way we killed animals en masse for food. I think that in the future clean and plant-based meat will become the norm, and in 30 years it is unlikely animals will need to be killed for food anymore.
en
Notes and References
1) [https://www.virgin.com/branson-family/richard-branson-blog/clean-meat-future-meat]
Prediction params: expected, complex, careful