It’s a group survival thing. It’s helpful to have some reckless members because they discover solutions that others would never explore. In particular, young males have been prewired by evolution to generally be the most reckless members of a group because they are the most expendable. The number of young females determines a group’s reproductive rate and older members tend to have critical skills, knowledge, and wisdom. I speak as a former young male who explored more than his share of possible solutions for the group.