@Thought
"these days even getting things up to a low Earth orbit is a problem"
I think that you underestimate how many successful launches there are every year; the rate is over one per week.
http://en.wikipedia.org/wiki/Timeline_of_spaceflight
It's always sad when things go wrong, but we are still in the early days of space-flight and the lessons are hard and expensive; in this case it's only money and equipment that were lost. Experience is what you get when you don't get what you want; and I'm sure that Orbital Sciences will get to the bottom of this and use the experience improve their systems and equipment.