It doesn't make sense to me, either. Even if we descended from monkeys, there could and probably would still be monkeys. Evolution does not change one species into another. If it does anything, it only creates new species.
I don't mind being a monkey's uncle, or distant cousin, but current evolutionary theory holds that monkeys and men both descended from prosimians, things much more like lemurs.
The continued existence of the parent species does not by itself invalidate evolution. I really don't have a problem with that. If there is no intelligent design at work, then evolution is simply random, even though one of the tenets of evolution is that only one species in a biome can fill the same environemental niche (in spite of wildebeest, antelope, and zebras all being grasslands herbivores).
I'm suspicious of evolution being preached in our schools and universities, since it has several important things that need to be addressed before the theory can be said to be complete.