started another thread, but interesting take https://qz.com/911968/bill-gates-the-robot-that-takes-your-job-should-pay-taxes/
No they will just make love. Essentially if you look at it, 99,999% of wars, even just catfights and spats among women (not that they are less important) were ALL motivated by economic reasons, $$ if you dig deeper for the root cause. But if one day, production is SO efficient with all the robots working that everything cost FREE and there is no economic hardships and thus problems, then why would there be reason for war?
Of course we will be watching with popcorns and beers in hand. The robots on both sides will be too busy fighting one another to watch.
Because there is some things that money can't buy. But I think you are right anyway, in this hypothetical (I think this does not exist) scarsity-free world.