>>>Fallen angels cannot procreate with humans, as they are spirits.<<<
But what about the angel that slew 10,000 men?
he did so in a material world, therefore he was able interact in this natural sense.
If that is so, then angels, fallen, or not ARE able to interact in the material world.
>>>The giants were the Nephilim , see Numbers 13:33, an actual race of men.<<<
You made the point where in Gen 6 it states that they were there in those days and “also afterward”
>>>The sons of God were the God-fearing descendents of Seth, while the daughters of men are the iniquitous descendents of Cain....Noah was “perfect in his generations” as he was the most righteous man among all the evil ones.<<<
Why wasn’t noah part of the alleged “iniquitous descendents of Cain” too?
Your logic is weak.
“perfect in his generations” is a clear Hebrew statement of “undefiled lineage”.
Men are subject to the natural inclination of evil and their hearts are evil continuously. It was the great wickedness of men that caused their demise. Noah descended from Seth not Cain, and the sons of Seth were God fearing.