We have all heard it before.
If humans evolved from monkeys, why do we still have monkeys?
Besides the obvious incorrectness of this unintelligent question, try asking yourself;
If white people evolved from africans, why do we still have africans?
Creatards will have a mental breakdown if they ever hear this, but the fact remains, caucasians evolved from africans and the reason africans still exist is that on the african continent, having dark skin is still better than having fair/white skin.
Being willfully ignorant is fine. As long as you dont try to cripple your children and others around you with your ignorance.