You have it all rong the greens want us humans dead becouse we are the problome (I know I can not spell).if the human race dies all is well with the creation(better a beaver dam than a human dam blocking a river (fish still die).
pros more enamys to kill. open ended build your own ship travel here you whount meet the mob. trade/smugle and build your own ship your way.
cons not that many cat to kill.
you not demanding try having a 3 year old looking over your shoulder while you build his comp that he wants to use...