Meaning: War is a pointless and destructive activity that results in the unnecessary deaths of many people.
Choice of Words: Waste means to use something in a way that is not useful or productive. Life is the existence of an individual.
Alternative Expressions
War is a terrible thing.
Meaning: War is a very bad thing that causes a lot of pain and suffering. It is something that we should try to avoid.
Choice of Words: **Terrible** means very bad or causing great harm. When you say that war is terrible, you are saying that it is a very bad thing that causes a lot of pain and suffering.
War is a useless thing.
Meaning: War is a waste of time and resources. It does not achieve anything good and only causes harm.
Choice of Words: **Useless** means not having any purpose or value. When you say that war is useless, you are saying that it does not achieve anything good and only causes harm.