Like, the thing about the hand aside,

they're both conjecture based on a microscopic sample size.

Your hand covering your face isn’t coincidental or unlikely; everyone’s hand does and it’s written into your genetics that it should.

ahem, this is so wrong in so many ways.

everyone’s hand does

Nope.

and it’s written into your genetics that it should.

pshew wow nope nope nope.

Nothing in your genes controls a proportional size relationship of your hands to your head. And not everyone has large hands, look at trump for example.

There’s no particular reason why a big rock should end up in the particular place it did for us,

you really don't understand planetary formation, stability in orbital mechanics and a bunch of subjects. there's tons of good reasons to suspect the other planets had moons as well; they simply weren't as orbitally stable as ours ended up.

The only thing your (and other person I'm responding to here) argument has going for it is the extraordinarily difficulty of resolving exomoons orbiting exoplanets around our neighborhood.