Human decision making is a complex phenomenon which can be guided by various factors ranging from culture, situations, framings, and emotions. Especially when analyzing the value of human life in the trade-off decisions of life and death then making a choice becomes even more complicated. Humans use various parameters for decision-making like age, utilitarian choices, longevity of life, cultural preferences, and kinship selection. The paper examines decisions about human lives by reviewing empirical research in experimental settings from the lens of psychology and in real life social dilemmas. The systematic review will also analyze the examples of varied moral dilemmas, such as the ongoing social dilemmas faced by technology for prioritising different human lives and ethical dilemmas during natural disasters. Lastly, it will elucidate and unpack the policy guidelines given by international organizations which protect individuals during humanitarian crisis.