Slavery was Ethical at one point in time. Like morals, ethics changes as society does. Many do not consider capital punishment Ethical, while some are all to happy to pull the trigger as much as they can.
There are allot of valuable resources in asteroids and the Moon. The best thing about the Moon is that is very close. The gravity well situation can be offset with railgun launchers and a space elevator. A space elevator would be far easier to build with the Moon's lower gravity than a Earth based one. Another good Moon project would be a Belt of Solar cells around the equator that could beam electricity to the Earth. There are many more reasons the Moon could be a wonderful Industrial Park for the future. See: Major Lunar Minerals
How about we work on figuring out a way to stop reproducing like rabbits. Until we have a world wide control on population levels we are doomed to continuously suffer from famines and poverty on ever larger scales. The whole idea of terraforming Mars is a pipe dream due to the lack of a magnetic field to provide protection from the Sun. Mars may have been wet at some point but its core cooled down to quickly and lost its magnetosphere and most of It's atmosphere. Until we can produce a Warp drive or build generational spaceships Earth will be our primary home. It's time to start seriously protecting it from ourselves.
In other countries they already use Hydrogen for party ballons since it is cheaper. When I was stationed in the Phillipines we would dip the ballon string in lighter fluid, light it, and let it go into the air. It would make a nice little fireball!
Most today do not read it. They rely on the Pastor to cherry-pick the relevant passage of the week. At LifeChurch.TV services it is very slickly preprinted and packaged like any other commercial product.