There are many reasons why they attach the importance to the exploration of space.
Space is the future of humanity since access and exploration of space will have a major importance in the industrial reorientation around the world to be able to cope with climate change.
In the first place, we would not even have realized the existence of climate change without the work that has been done from space.
Secondly, very few people are aware that, without weather observations or weather forecasts, only realizable from space, we could not feed the current human population. Weather and agricultural satellites, as well as the global positioning system (GPS), provide farmers with information on weather conditions that allow a 15 percent increase in productivity with which to feed people. Ports are no longer rotting with loads of food. Farmers may decide to grind corn one day before, or advance or delay one day their cultivation.
In the short term, there is a reason to provide us with a greater understanding of climate change and to provide us with the necessary information and communications so that the planet can produce enough food to feed a growing population. However, in the long term, we also need to be in space to obtain the future sources of energy that the planet needs, and probably even to provide us with some of the solutions that climate change requires.
It is worth mentioning that solar umbrellas that are being developed are less large than you might think. It is a small crystalline structure made with a transparent sheet that is placed in the space in a dispersed way, at the point of Lagrange (located halfway between the sun and the earth). From this location the umbrellas could reach about 5 percent of the sun's rays, which in real terms supposes a very high value.
There is also the belief that the internet hardly consumes energy, but in reality generates large amounts of greenhouse gas. For example, some scientists have speculated on the possibility of creating Serva farms, which are powered by solar panels and emit electromagnetic signals from space to computers, saving less than 80 percent in electricity.
Due to these reasons as well as many others, entrepreneurs like Sir Richard Branson (founder of the Virgin group) and Elon Musck (co-founder of Pay pal, Tesla and many others) are leading a race based on their own resources to conquer the Moon or Mars and all the resources that could generate us, us inhabitants of the Earth.