Ragna you just answered your question right there see

"Whereas all the different cultures have their creation "myths" since the dawn of time because we all know humans fear what they do not know, so even if they have to make stuff up, they want to have answers!"

Scientists when they propose a theory it is according to the leading science of this age, that doesnt necessarily prove it to be true.
for all we know they are making things up according to the best information they have.

i mean why do those fossils have to be related to us, they could be just like dinosaurs, an extinct species.