X-Prize founder Peter Diamandis argues that it is moral to explore space, and cites some of the following reasons:

“If you think about space, everything we hold of value on this planet is in infinite supply there,” Mr Diamandis explains.

“Earth is a crumb in a supermarket full of resources.” [...]

Both Mr Rutan and Mr Diamandis are passionate believers that humanity’s future in space should be led by non-governmental missions. [...]

The infinite resources that Mr Diamandis talks of include nickel-iron asteroids worth $20 trillion on the open Earth market.