Yeah okay but I'm not talking about actual MORMONS dude. Like, I'm not even necessarily talking about a religious group. There just needs to be a population of people living in orbital habitats that pool their money and buy an orbital habitat to live in together which all share the same general life ideals of "I want to have like 5 kids". Kids growing up on that orbital will inherit their parent's way of life for the most part, pessimistically 60% of them anyway. With a starting population of 10,000 people, 5 kids per couple on average, and a 60% ideological retention rate, the population of this "space-mormon" group grows to 25,000 people the first generation (say 25 years), 62,500 people after 50 years, 390,625 after 100 years, 95.367 million after 250 years, 9.1x10^11 people after 500 years. That's already entering the beginnings of dyson swarm territory. Also keep in mind that every generation is losing 40% of its numbers to literally any other lifestyle (ie I only want 1 kid, I don't want kids, I want to play MTG, etc), so the actual human population at this point would be even larger.