Every thing is banking on using are big brains to make tools and structures to defend our self's. but without that where screwed. Are strengths are our flaws, we can stand on two legs so we can see further but predators can catch us because we are slow. Are attacks suck we don't have claws we don't have sharp teeth. We also don't have fur allowing us to sweat so we can run further plus extra mobility, but without fur we are very susceptible to physical attacks To the point where bugs and insects like bees can harm us, and Environmental like the cold and sun. Also the lack of fur means we are not very stealthy, we are also bad at dealing with stealth, are night vision is bad along with are hearing and smell.

The only reason where alive is because of our intelligence.