If humans evolved from monkeys, then why are there still monkeys?

Many years ago a tribe of monkeys got kicked out of the trees by stronger, more successful monkeys. The latter's descendants are still monkeys, the former's had to walk around throwing sticks and rocks at other animals to survive, and eventually became human.
 
They aren't the same monkeys as the monkeys we are.
However, we can dream that one day we can reach the monkey phase of enlightenment.
 
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