True, but we've evolved because of our dependency on tools.
If a predator uses it's keen sense of smell is that a tool ?
Is a cheetah's speed a tool ?
A raptor has brilliant eye sight, is that a tool ?
Once upon a time man kind probably had all these things but nowadays we don't need them as much.
But your right, if left on his own in the wild without tools most, but not all, humans would starve.
But isn't that survival of the fittest.