LMFAO are you serious?? Just do a 2 minute google search and you will see there is huge value in mining in outer space, and probably a lot of other things we don't even know about. I was going to explain all the riches available in space and post links but there is soooo much information on this, if you don't believe it and are unwilling to look then me posting it probably isn't going to help.
You cannot seriously believe that in an infinite universe (100billion stars/planets X 100billion stars/planets) that this one rock we call earth is the only place that has resources of any value.
Some thought we were going to be rich after we landed on the moon as well. Turns out the rocks look nice in school classrooms around the country. What a joke. No one really knows what minerals is on any planet or moon but somehow everyone will be rich. I guess the input costs are manageable if you the taxpayer to foot the bill.