But if life cannot appear on an earth like planet, and they're "abundant" enough that two planets in the "goldilocks zone" within the same solar system can deve

But if life cannot appear on an earth like planet, and they're "abundant" enough that two planets in the "goldilocks zone" within the same solar system can develop into "earth like" planets, that might indeed mean that we're alone, but at the same time also hint at there's a whole galaxy out there with "earth like" planets just waiting for us to colonize them.