Yo OP. We're carbon based, which you accept. Diamond is stronger than almost all metal, and it's pure carbon. Why wouldn't we have metal in our veins? We atomically won that round before inflation was even over.

I'm just playin, carbon under high enough pressure is metal too.

Twice over, my favorite fact is that humanity has only existed during the time frames that the moon and the sun have been the same size in our sky, this allowing total eclipse - which is so obviously ridiculously rare I don't see the point in quantifying with maths.

I think it's bizarre to think we have free will. Everywhere around us, in all our tech, tools, toys we see the realities of determinism. Cause and effect. To think that our minds are somehow not governed by this in a universe that unequivocally is is beyond Babel levels of arrogance.

Beyond that, the idea that's gaining ground about shared consciousness I find really intriguing. Rather fascinating stuff.

Consciousness is the biggest mystery of the all, after all.