As long as you're positing an evolutionary urge with no present-day benefits, why assume the most complicated explanation is correct?
A evolutionary urge is being assumed as the reason.
All accepted evolutionary urges have direct benefits to present-day society.
The analyst report is here.
At the abbey many monks were believed to have been killed.
A brown cat is running across the yard with its toy in its mouth.
Fishermen and anglers don't have an edge because they're old.
Kids are preparing for the SAT.
Three people are outside.