Should pandas be kept in captivity?

Back in the old days, zoo's were used to capture animals and forcing them to entertain people, like in a circus, you could say. Today zoo's are like...an animal santurary where endangered animals such as the panda are kept in captivity to be protected and possibly even bred. For instance, if a panda was out in the wild minding its own business and then suddenly a hunter came, it would be dead in a few seconds. Further, Panda's are kept in zoo's because too much of their forest home is being destroyed by humans. As the Earth over-populates with people, especially China, mind you, we need to clear away land to provide homes. That means chopping down trees. Especially the Bamboo forest of the Panda bear.