Do you think space exploration is important? Is it worth the billions our governments spend?
Is it worth the billions? I've got a better question, why aren't we spending trillions? Space exploration, and by proxy I'm assuming space everything (manufacturing, mining, energy capture, colonization) is the most important thing we can be doing right now.
We're approaching a bottleneck in resource production on this planet. All of the easy to get stuff is rapidly being mined, pumped, and scooped out, and once we have to try reaching for the difficult stuff we'll be facing a cost/benefit situation that will make most durable goods impossible to afford.
Meanwhile, quintillions of tons of metal, water, volatile organics, and hydrocarbons are floating above our heads, just outside Earth orbit, not to mention limitless (for us, for now) supplies of free energy.
Imagine for just a moment, a world with no power plants. No coal stacks blasting radioactive soot in to the air. No nuclear plants with hot potato waste products that are ripe for conversion in to weapons. No oil or gas plants sucking up thousands of tons of oil a day. Instead, picture an open field full of widely spaced metal poles. Birds jump from pole to pole while a heard of cattle lazily graze and occasionally use the poles to scratch their flanks. Meanwhile, these poles are in the processing of converting microwaves beamed down from a satellite in to gigawatts of electrical power for the near-by neighborhood. (and possibly their time traveling Delorians)
Imagine a world with no factories or farms, just a narrow belt of glowing dots in the sky and the occasional glimpse of the sprawling green bubbles of a hydroponic space farm. The land would go back to green, the old hulks of mills and other assorted manufacturing places could be turned in to housing, shopping areas, parks, concert halls, or torn down and planted with trees, whatever the community desires. There would be no hunger because we're landing a thousand tons of fresh vegetables, meat, fish, poultry, dairy products and grains anywhere in the world, rain or shine, on 24 hours notice. Preservatives? Why? This beef was a cow walking around in a pasture yesterday. This apple was harvested by a young man at the L5 farm two days ago.
Imagine a world where unemployment is nearly unheard of. The average person can qualify for orbital rating with a few weeks training and there are always jobs in space. When you take away the want part of the human equation, we're suddenly free to do what we really want. Arts, sciences, philosophy, religion, all ready to be experienced by minds freed of the fear of deprivation.
We've got the technology to harvest near-Earth objects, in fact we've had it since the 60's. We've got the technology to capture solar power and beam it to Earth, we've had that since the 70's. We've been growing hydroponic plants since the 30's. The thing we're lacking is the drive and determination.