Luckily, I have not, nor do I want to. Using these cool inventions to kill people seems like a waste. The amount of resources wasted on wars is a shame. Solving problems like the energy transition to renewables would be so much easier with the kind of budget that literally gets blown up because one man with a tiny ego wants to hurt another man with a tiny ego.
This attitude won't help you stop wars from happening, though. You can hope it won't happen, know it's a waste and still expect any technology to be evaluated for usefullnes in warfare, be it trade, cyberspace or plain old kinetic conflicts. Thinking otherwise is irrational.
