Each individual of your civilization leaves a very long life. Some seem to remember the "big bum". This makes one very cautious and unhurried. Damage is a bit low, but all units have additional HP and defense systems are supperior. Somehow mining slowed down too.
A transient live a short life, and he has no time to look around. He fires quickly and likes "fast food". Ships are weak, but fast. A few has no problems with the law, so you will always have a man to do mining.