Why lose 20-30 elo when you can lose 80?

Basically leaving blue-star player alive behind your territory is asking for trouble later :P

"The higher up a hierarchy a lobster climbs, this brain mechanism helps make more serotonin available. The more defeat it suffers, the more restricted the serotonin supply. Lower serotonin is in turn associated with more negative emotions – perhaps making it harder to climb back up the ladder."