Huh? The whole point is to make space travel cheaper. We won't need spacecraft that are sturdy enough to withstand takeoff and landing in Earth's gravity yet powerful enough to reach escape velocity from that gravity. Those spacecraft are enormously expensive. Most of their fuel is expended on moving the bulk of the craft itself rather than the passengers and other contents. With an elevator all you have to do is transport the people and goods to the top--which can be done very energy-efficiently by making sure you have a load coming down every time one goes up. Then you launch an absurdly flimsy spacecraft with a payload much larger than itself so your fuel is expended on doing real work instead of moving the ship back and forth. A space elevator is a very sensible idea. The only drawback is the possibility that some Religious Retards will find an excuse to blow it up, probably while there are ships out that will now have no way to get their crews back to earth.