Why is using Glyphosate worth defending? Does it make food taste better, or grow larger, or become more nutruitious?

If the only value is to increase the value of crops, by planting patent seeds, and then dousing the land in weed killer, perhaps people, regardless of the published scientific quality of their rationale, think that our food supply would be better off without it.

Unless the suggestion that Glyphosate is the only way to grow the necessary amount of food then I think the question should be: What justifies it's use? So then why would you bother to care if the imputed and over generalized public rationale is right or wrong?

If it is in fact so worth using then why shouldn't the government use imminent domain to capture the patents and distribute the technology for free?