How you edit is not important, how the team you are part of all edit is. By making lines 160 characters long you force everyone to have to code the same way you do.
Well, no developers on my team have windows that narrow that they require 80 chars per line to fit. In fact, all of them have a 24" monitor, and normally code full screen. Now what?
I think Dawkins' concept of the selfish gene is a more accurate portrayal - an organism's goal is to propagate it's own DNA.
If it is beneficial to kill off the competitors, then that is the nature of the beast. If it is of benefit to have some level of cooperation with the tribe to eventually help propagate ones' own DNA, then the beast has become a little bit more civilized..
It is not a given of evolution that an individual organism looks to benefit the species. It can work out that way, but it's not a rule/law of evolution.
"A car is just a big purse on wheels." -- Johanna Reynolds