There's so much ugly rhetoric in this thread.
He was a naive kid who joined the army, served his country, and then apparently made a really stupid decision to leave his post. The army will ultimately decide whether to bring charges against him, but he is an American soldier and citizen who is innocent until proven guilty - even in military court. Since he hasn't done anything wrong in the eyes of the law, we had to bring him back. As we wrap up our involvement in Afghanistan, I'd imagine that we will be returning a lot more Guantanamo prisoners too, and I'm sure many will be outraged over that.
I'm willing to bet that Bergdahl has, or will have, deep regret over his decision to leave the base, as well as a profound appreciation for the resources and sacrifices it took to bring him back to the USA. Once he's done with his re-introduction into society, it is my hope that he avoids the public spotlight and lives a good life to honor those who died serving their country. That's a big ask considering the intense media pressure he will be subjected to as well as how scrambled his head is. If he writes a Tell All book and hits the talk show circuit to profit on this, you can rest assured that I will be the first to throw stones at him.