I like to think,
    (it has to be!)
    of a cybernetic ecology
    where we are free of our labors
    and joined back to nature,
    returned to our mammal
    brothers and sisters,
    and all watched over
    by machines of loving grace.

-- Richard Brautigan (1967)

if all the resources spent in useless wars were poured into working towards this goal, we would be there for some time already

Sure, but we should probably plan for what’s actually going to happen