Onward! That's all you can do. Once you've made it to the bottom, you have to go back up. I had considered riding a mule up, but, they told us that is not possible. Teddy Roosevelt made the park and his intention was to preserve it's natural beauty. Nothing goes down to the bottom except hikers and mules. Unless it's a real emergency and they helicopter out 300 people a year.
There are so many things that could be done to get more people in and out of the bottom of the canyon, like having a tram to the Indian Gardens on the Bright Angel Trail. The BA Trail is listed as one of the 10 most dangerous trails in America. I guess people start the hike at the top where it is cooler and down at the bottom there can be a 20 degree difference in temperatures.
We made it! We are now in the exclusive club of hikers that go to the Phantom Ranch in the Grand Canyon. Whew!! Less that 1 percent of the people that travel to the rim make the hike. The S. Kaibab is grand vistas and a lot of red earth. The Bright Angel is a lot more intimate views, small waterfalls and trees.