I think armchair quarterbacking is reckless and inexcusable. These people has been working on airplanes and space crafts for some time now and I would trust their judgment. Especially given that they put their own lives on the line.
Please have a look here - http://en.wikipedia.org/wiki/Soviet_space_program#Incidents....
One step at a time.
If the Soviets deemed it too risky for human pilots and managed to automate it 25 years ago maybe that should put it into perspective just how risky and reckless what Virgin are doing is.