Well . . . I suppose if you want to read it like that, you can. The simplest, easiest, and most consistant with scripture interpretation of the "sons of God" as it realtes to the "daughters of men" is as I described before. The human race was contaiminated by false doctrines and unbelief, not some sort of strange "offspring". Only 8 were saved because only eight still had faith in the promises of God. We have always been saved by faith, and so were Noah and his family.
"(24) And Jesus answering said unto them, Do ye not therefore err, because ye know not the scriptures, neither the power of God? (25) For when they shall rise from the dead, they neither marry, nor are given in marrige; but are as the angels which are in heaven" Mark 12:24,25
Think on these things.