From the Jain point of view, killing living beings is always हिंसा and is spiritually harmful.

What can differ is:

• Intention: deliberate killing is more severe.
• Carelessness: harming beings through negligence is also हिंसा.
• Degree of violence: some actions cause more suffering than others.

So in Jain Dharma, it is not considered “logical” to kill beings. It may be viewed by worldly people as necessary in some situations, but Jain ethics teaches non-violence, compassion, and restraint as the right path.

In simple terms:

• Cruel killing = violent, intentional, harmful
• “Necessary” killing = still हिंसा in Jainism, though the karmic burden may differ by motive and awareness

The ideal in Jainism is to avoid harm as much as possible to all living beings.