<font color="yellow">answers...</font><br /><br />The shuttles would still be very expensive as unmanned cargo launchers and they are getting old. The SDLV is the best thing the shuttles can be used for. <font color="yellow"> Shuttle are expensive and dangerous for crews but EXIST (and can be used as a crewless cargo for 10 years), SDLVs will not exist for 8 to 15 years (time depends of funds, tests, problems, reliability, etc.), if you need to go office 250 day per year in the next 10 years, do you use a car (or a train or a bus) that EXIST or a car that DON'T EXIST??? </font><br /><br /><br />People are “excited" about the new-old-looking CEV-SDLV-Lunar program because <br /><br />1 there’s a lot of science to do on the moon. <font color="yellow"> I was VERY enthusiast of Apollo missions because was great and fascinating adventures, but, on the moon there is NOTHING of useful to do or to find: no bacteriums, no organic materials, no fossils, no water (certainly not so much water like on earth!!!!), no E.T.s, no rare minerals, no gold, no oil (however, extracting lunar water will costs 100 times more than send the same amount of champagne on the moon!!!); you will see with your eyes, when the lunar missions will be done the astronauts will find and bring to earth only a few new rocks!!! Some say that, probably, on the moon there is the precious Helium3 for Fusion Reactors... but there is a (little) problem... on earth there are NO working fusion reactors able to give energy in quantity, the max fusion time was of fraction of seconds and probably a true fusion reactor will be available after 2030-2050...</font><br /><br /><br />2 There resources on the moon that can bring down the cost of space flight.<font color="yellow"> ABSOLUTELY NO! to build anything from mineral you need to send on the moon the ENTIRE line of trasformation and manufacturing available on earth, and this will cost MANY TRILLIONS dollars!!!!!</font><br /><br />3 I