I agree. An accident or two during testing is standard fare. That is what a test programme is for.
It seems that the accident may not be related to use of a new fuel, but rather an uncommanded deployment of the rear wing. In any event, improvements will be made and the technology will prove itself.

Did motor car companies stop because of an accident? No. Did the early US and USSR space programs stop because of an accident? No. Regroup, stay calm and keep going Richard. It's your dream.

When Virgin Galactic started, the idea was almost viable, but today with other firms lowering the cost of ascent all the way into orbit, the experience they hope to offer is neither going to be exclusive nor the best available. Although the competition will be more costly, I think Virgin's moment is past and perhaps the switch to more powerful rockets was partly a last gasp effort to literally recover some momentum. The group made a noble effort and it is time to let it go.

Virgin Galactic has so many possible applications in the future, of course it will continue. When you think that the Galictic space craft reaches 2.5 times the altitude of Eustace's space jump it becomes something really special. Yes they will continue.

How many planes crashed before commercial aviation "took off"?
Humans will never stop pushing technology forward.

Whether this is the new De Havilland Comet, or the new Apollo 1 remains to be seen, but I'm hopeful it's the latter, not only would it be a boon for tourism, but also for research. I mean right now the only opportunities for weightlessness are either a costly space launch, or a matter of seconds on the Vomit Comet, whereas this will provide several minutes of weightlessness fairly cheaply.

Real exploration is self funded, risks are self-borne, blame is taken on the chin. Those who died did so knowing the risks and were willing to put their lives on the line. We are fortunate today for lowering the risks to the absolute minimum, but exploration without risk is not exploration.
Go Virgin.

Progress carries a price tag and part off the price where transport is concerned is the lives of test pilots. When they go into service there will inevitably be a fatal accident; almost certainly more than one.
If you don't accept the price of progress then go back to living in a hole in the ground or swinging through the trees. Just watch out for rock falls, collapsing walls and breaking branches.

Well if I was completely honest about it and knowing the risks, if I had the money I would jump at the chance to fly in SpaceShipTwo, how else am I going to experience weightlessness and view our planet from this height. We're lucky we live in a time where such journeys are possible and if you think about it, in ancient times crossing the seas in wooden boats was undoubtedly far riskier.

Is standard flight tourism dead in the wake of so many crashes? No. Same for space tourism. It will be as ordinary as flights around the world now.