Christopher Hitchens was asked "How much longer are you going to do this?" He responded, "Until I drop."
He went on doing what he did best -- pointing out what he considered to be the foible of faith. His voice was needed in the conversation.
In 2011 he dropped. His voice is missed.
The "this" that Hitchens did was to annoy, consciously, the religious-minded.
I'm religious-minded. I'm glad he annoyed me.