Bear in mind that war is not the normal state of things for people. I don't care about what looks like warfare among non-sapient animal species. Perhaps that's due to the species being non-sapient, rather than it being some imaginary "immutable" law of biology?
In any case, we're not telling stories about the Far Future when we're roleplaying science fiction. We are telling stories about ourselves in the here and now.
And I can get mighty sick of people who think that war is the be all and end all of Traveller, when there are so many other kinds of campaigns you could run, such as the exploratory campaign, the trade campaign, the diplomacy campaign, the career criminal Stainless Steel Rat campaign, the science campaign, the investigative campaign, the rescue campaign ...