I've said it before: humanity is not going to relocate anywhere in space until we have the technology to recycle 100% of each person's waste products into 100% of of each persons necessities.
I've said it before: humanity is not going to relocate anywhere in space until we have the technology to recycle 100% of each person's waste products into 100% of of each persons necessities. I guess we don't currently fly in space nor have men serving on nuke submarines under water for months at a time. /sarc
All it takes is the will to do it and we can do anything we set our minds to do. If you always wait around for the perfect solution, you will never start.