If there is to be overmen (and there is), perhaps the first question should be: How many?
It is somehow common wisdom that we are overpopulated, that we are bagillions of groveling, teeming dirty masses squeezing the life out of this poor, dear roundrock. How comes that to be?
The poor, dear fact is that human monkeys are the complete pinnacle of everything, as far as the eye can see. Even the modestest plank of an apeknob standing there picking her nose, contemplating her finger as it glistens in the midday rads, is ever so much more desirable than even the nearest non-humonkey rival.
We are precious dears, you can bet the farm on that. Because, you know, we're a bridge over an abyss and whatnot.
So, from where the clamour that we should be lesser by far? Whose mighty idea might that belong to? Let's have "Utopia" as an exemplate (the TV series, not the thing): Oh dear, we must all die now, or bear no more earthmonkeys else we choke our precious resources to death and thus all die later, or bear no more earthmonkeys. Your struly narrator loved it ever so much, but really, it's all rather silly. What shortage of resources? Is it to oil thou referrest? Screw oil! Silly buggers. Will we consume all the water, then not urinate it out? Eat all the gold? Run out of ink to print mealtickets?
Is it energy that concerneth thou? Is it that we shall have none, then burn each other's bones to keep warm in winter? Granted, it might get cold, or hot - that may come... but yeah, so? Are we not the mighty planners of the apes? We can't, you know, figure something out? Oh but deary me, we'll have no coalies, see?
Riiii...iii....ii..ght.
You know, let's just pretend for a moment that the sun doesn't also rise. That there isn't enough sunshine to power everything for ever and ever amen. No probs, bub. Let's make some nother plan. How much energy shall we need to sustain some bloated bunch of energy hungry overmen. Let's consider a contemporary analogue - we shall substitute the citizens of that planet called the US of Amorica... Pop. 300 000 000, give or take.
Let us consider the annual energetic appetite of such a being: Wikipedia claims a per capita use of 300 gigajoules... this is shaping up nicely. Now, according to some dumstein, the number of joules is equal to the number of kilogrammes, multiplied by the square of 300 000 000 meters per second. The fricken square. (I'm rounding off these figures, but not much.)
So... crunching the numbers, how many kilogrammes of mass contains enough energy to power Amorica for one spin around the (now non-shining) sun? It is 1000. Yes, there is enough energy in one cubic meter of ball park sewage to run everything - everything - in the US for a year.
Yah sure it's not that easy and whatnot, and it's dangerous and quite hard to do. But we don't do these things because they are easy, we do them because they are hard. It will take lots of monkeypower to build the facilities maybe, but wasn't that the one thing we had plenty of? Wasn't it us just now who were concerned for unemployment?
You know, just let the overmen hump like bunny rabbits and let them fill this barren wasteland of a fricken boundless universe with little bitty overmen, and let them laugh and play and plant lawns if they want to, good dammit.
Sheesh.
PS: https://www.youtube.com/watch?v=IL8M5g8PO94