I voted that our technology would be worse without war - Think about the stuff we have due to it; The internet, satellites, more effective medicine/operating procedures and related tech.
Without the need to develop a technology then there is no motivation to do so. If there was never a need to instantly transmit the fact that the USSR had launched 50 ICBMs at the USA then we would probably not have developed the internet as soon.
If we didnt have people shooting each other and blowing each other up I would imagine it would be more difficult to develop the kind of surgeries that can repair that kind of damage - of course you'll still have subjects from say, industrial accidents and a few other unlikely events but with war you have a steady stream of casualties with which to perfect your procedures.
Furthermore, like I mentioned in another thread of mine, though not directly linked to war is the experiments conducted on PoWs at Auschwitz: The majority of medical knowledge we have today on hypothermia comes from the experimentation of these subjects.
Without war then the V2 missile might never have been developed so where is your space program then?