Further, if evolution were true, why are there any monkeys left?
Because there are still environments more suitable to monkey lifeforms than to human life forms. We have repeatedly proven that when a species habitat is removed we can extinguish the species. This is true of both plants and animals.
Take a gander at the two-toed minority of two certain tribes of Africans, the Kalanga of the eastern Kalahari desert in Botswana and the Vadoma/Wadomo of Zambezi valley in Zimbabwe. Observe that since the (relatively recent) mutation on chromosome #7 produces no ill effects, actually is perceived as a societal benefit (reportedly aids in climbing trees), and does not produce sterility, the trait manifests several examples in every generation in this locality.
Should this trait become so desirable in that culture that "normal" feet are considered less cherished, and those with "normal" feet considered less desirable as mates, breeding would ensure an increased rate of this mutation until that specific tribe reached the point where the genetic "throwback" that would appear occasionally would be what we call "normal feet."
The mutation (ectrodactyly) is by no means unique to Africa, however in other cultures it is perceived as highly undesirable, and therefore rarely progresses more than a single generation in these cultures before dying out.
That evolution occurs is an indisputable fact. Current examples of mutation from the "normal" (average) human genome that prove societally beneficial within a certain culture proves the reality of evolution. The degree to which evolution accounts for the diversity we currently witness is still a question mark in my mind.
Respectfully,
AuldSoul