If humans evolved from apes, why do we still have apes?
Are they the evolutionary underachievers?
Humans didn't evolve from apes. Both evolved from a common ancestor.
Different species of apes went in different directions, evolutionarily speaking. The fact that one branch of the ape family consists of humans does not mean that all other apes went extinct.
In any event, humans did not evolve from any of the other existing species of ape. We share common ancestors, but we did not evolve from chimps, gorillas or any other existing ape species.