Well, the resources on Earth are what it is all about now. Before we get to rely on resources in outer space, to get to that stage, we probably have to solve a lot of problems with the resources available down here.
If you mean there is more space on the planet, I disagree. We're not the only species. And each other species is linked with multiple species. The more we displace and interefere with other species, the more we alter the entire ecology of Earth. It's better the less space we occupy.
And quite a large number of people live in poverty with each day a struggle to get enough food to go on to the next day. While a lot of others do completely mundane work that leads to no progress at all. And some are just stuck in fundamentalist religious socieities, where you're only supposed to stick to centuries old dogma. What we need are more people educated, more people doing research, yes, doing the science and work towards new and better solutions. But we could do far more, with fewer. Especially as we're not consuming various limited resources at a rate far beyond what they are renewed at.