Q said -

"Consider the vastness of space."

In relation to are we alone question.

Apparently the rough estimates are here -

40 BILLION Habitable (goldilocks) planets in the Milky Way alone. 29 Billion of these orbiting red dwarves and black holes.

Remaining -

11 BILLION habitable planets orbiting comfy Suns like our own.

Galaxies just in the 'observable' Universe - probably a lot more -

200 Billion to 2 TRILLION Galaxies.

Lets average that to around 1 TRILLION Galaxies each containing 10 BILLION Habitable planets.

Not sure the exact number, but thats a helluva lot of Habitable planets in the Universe.