Has war advanced, or hurt civilization?

They say necessity is the mother of invention.

In wartime, many advancements have been made in technology.
Advancements that may not have occurred otherwise.

On the flip side. Many people die in wartime. How many of those dead may have cured cancer one day, or crafted life saving vaccines, or built a better world?

In your opinion, has war had an overall good or negative impact on society, and technology.

Remember, that radar was invented to see incoming bombers at night. But now saves countless lives predicting weather.

Nuclear technology was also funded heavily, due to its military application. But that technology is used for clean power,space travel and medical purposes also.

Obviously so many lives are negatively affected by war though. Through death , or trauma.

Would we be further advanced with or without war?