Why is the development of space important for humanity?

The reasons for this can be divided into two types. The first is based on the fact that we are alone in the universe. In this case, space exploration can make it possible to find a planet with similar living conditions on Earth, which will solve both the problem of overpopulation of the planet, which is less and less similar to an illusory one, and the depletion of resources – approximate forecasts are already known when some of their sources may dry up.
If we rely on the assumption that there are other no less intelligent civilizations, then space flights are a chance of contact with these civilizations, which may turn out to be friendly, as well as may be at a higher stage in the development of science – in this case, it is difficult to overestimate the importance of such contact … Who knows what we could learn from them? Defeat AIDS or old age and live forever? The options are endless.