killing large groups of people who often at the prime of their working age means suddenly you're losing often decades or centuries of working hours as well. In every single case, it's a wasteful use of energy. Conspicuous consumption or as a way of saying I am more important than you. I have higher status than you do.
for - status competition - conspicuous consumption - war - waste in general
- SRG comment - status
- luxury consumption is status symbol