However, you might be asking about a specific ethical or religious perspective on killing pigs. Here are some possibilities:
* Religious Beliefs: Some religions have dietary restrictions that forbid the consumption of pork, such as Islam and Judaism. This doesn't mean that the animal can't be killed, but it might be considered unethical to kill it for food in those contexts.
* Animal Welfare: There are many people who oppose the killing of any animals for food on ethical grounds. They believe that all living creatures deserve to be treated with respect and not exploited for human purposes.
If you're interested in understanding why someone might believe that a pig shouldn't be killed, it's helpful to consider their specific reasons and perspectives.