Nothing fails to endear the defence industry to the anti-war lobby than a suggestion that continuing conflict is good for business.
That said, the hot topic of conversation in the unmanned air systems community - which has just been meeting in Denver at the annual Association of Unmanned Vehicle Systems International convention - is what happens when the USA and its allies pull out of Afghanistan.
The effect of the two big wars this decade on the unmanned sector has been likened to what World War One did for aviation. Before 1914 aviation had been a passion for wealthy eccentrics and garden-shed pioneers. By 1918 it was a fully-formed industry. But once swords were turned to ploughshares, there was no longer a demand for more than a handful of military, utility and early passenger aircraft and the industry did not recover until the pre-WW2 build-up in the late 1930s.
Could the same happen to UAVs? In the nine years since the invasion of Afghanistan, unproven new aircraft have been thrown into action, programmes have been accelerated and the Pentagon and governments militaries have been hungry for the latest technologies and capabilities. The result has been a boom in a sector that back in the 1990s was a tiny niche in military aviation.
Unmanned aircraft have been able to work wonders in the relatively empty skies over Afghanistan and Iraq without the challenge of having to co-exist in busy civil airways with other aircraft.
Once the USA withdraws, as promised, from Afghanistan, these advances will not go away and the military will be left with technologies that, had the wars not happened, may not have been developed for some time. However, demand for equipment will be substantially less than it has been for the past decade.
The great hope for UAVs has always been the civil sector. As in other fields, technologies proven in the battlefield can mature into those that serve us in peacetime, whether it be in the emerging crime-fighting and security sector, or even in the leisure business, filming sporting events or providing aerial photography.
But however successful this market becomes, it is likely to be worth substantially less than the billions spent by the Pentagon on UAV assets to tackle the Taleban and Iraqi insurgents.
We look at some of the issues in this week's Comment - the issue is out on 31 August - and also in our report of the AUVSI show.