I find most win conditions problematic. There's no chance in winning, if you can't defend yourself. So any win condition is always just an additional factor to

I find most win conditions problematic. There's no chance in winning, if you can't defend yourself. So any win condition is always just an additional factor to pure force. Then again, you can cut out competition from important resources, but then you have a strong enemy whose only path to victory is war. And then the question is: why divide energy into two field, when you can just focus on the war machine and get the strongest force.