If all the money (and effort) humanity currently wastes on making better killing machines was rerouted to causes that (currenly only) transhumanists and singularitarians - and the bulk of future humanity - care about, what would happen? What is the upper bound of funds above which adding more wouldn't make a difference? Where do you hit severely diminishing returns and have to say enough is enough?
Do you have a list "If only we had practically unlimited money we would..."? I'd like to see one.