> When you'll realize that there is nothing for us up there
Nothing but resources, science, space to expand, copious energy and the chance to make humanity some what immune to the next asteroid.
200K years ago there was a guy sat in a cave saying "I don't know why you need to go over that horizon, we have everything we need here".
I am an atheist, I'm not dogmatic about it.
I just think that a species can have more than one goal at a time and that some goals transcend petty day to day things.
The ancillary benefits are nice as well, research and development often pays off in completely unexpected directions.
It's about what I hope the future will be and that's a humanity as partially a spaceborne civilisation.
I was born too late for Apollo (1980) and too early for whatever we are hopefully about to do but I hope to live long enough to see it the first parts.
> Every human activity in space has not only failed to break even but proved to be a financial disaster of epic proportions. The sheer amount of mass that we need to bring up there in order to live and thrive as a specie is so enormous that no rocket, no matter how big or reusable will get us there.
You have to boost enough into space for things out of the gravity well to become mostly self-sustaining outside of the gravity well.
To do that you have to get launch costs down by orders of magnitude on what they have historically been.
We don't want to be putting 10 or 20 tonnes in space, we want to be putting 100 up on every launch with multiple launches a day, the solar system is full of raw materials and energy but to make it viable the processing has to be done without sending it down and up the well every time.
The US didn't become the economic powerhouse that is because the UK shipped everything over to the colonies, that wouldn't have worked instead we (and the other countries colonising North America/Canada) shipped over enough resources to bootstrap an economy by supplying the tools/equipment to mostly survive on local resources, then initially shipped back raw materials which allowed the colonies to expand and eventually become independent/self sufficient in their own right.
I could see a somewhat analgous thing happening in reality and it's been a trope of science fiction for quite a while (The Expanse series has an interesting take on it, the UN/Earth, Mars and the Belters).