We actually do put a monetary value on human lives in a huge variety of situations. We just like to pretend that we don't and try not to talk about it.

For example, most health insurance systems around the world have a value they place on one year of "quality" human life, and won't cover medical treatments that cost more than that amount per year. In 2008, that number was about $50k [1]. I don't know what it is now.

When considering whether the monetary costs of a regulation are worth it in the US the EPA used about $9 million as the worth of a life saved in 2010, and the FDA used about $8 million. The DoT used almost $10 million in 2016. Cites for those are in this Wikipedia article [2].

[1] http://content.time.com/time/health/article/0,8599,1808049,0...

[2] https://en.wikipedia.org/wiki/Value_of_life

You risk your life and the lives of others for money every time you drive to work.

Statistical value of human life. Learn it , breathe it.