And why are there no examples of ape to human transitions?
Humans are apes. As for fossilized remains of human ancestors, there have been literally hundreds of threads posted with examples.
Besides the following you mean?
Ardipithecus ramidus
Australopithecus anamensis
Australopithecus afarensis
Australopithecus africanus
Australopithecus garhi
Paranthropus aethiopicus
Paranthropus boisei
Paranthropus robustus
Homo habilis
Homo rudolfensis
Homo ergaster
Homo erectus
Homo heidelbergensis
Homo neanderthalensis
Homo sapiens