You posted to think about it.
Usually this means that some glaringly obvious point was missed before.
I failed to get your original point, so I reposted it back to you, in hopes you’d be a bit more explanatory in your answer.
I see I’ve pretty much confused us both by now! 8^)
OK, let's start there...
This seems to be the point of departure:
[roamer_1:] But Noah was not corrupt - being 'perfect in his generations' (stop and think about what that means)...
So, in explanation:
Gen 6:9 These are the generations of Noah: Noah was a just man and perfect in his generations, and Noah walked with God.
(e-Sword:KJV)
Boogieman focused upon 'generations' in his analysis... I would focus upon 'perfect' - The word is tamiym in Hebrew, and is the same word used to describe a sacrificial lamb's 'perfectness' (without spot or blemish). While it can be used otherwise, it's main connotation is a physical one - being without any physical spot or blemish - And I think that here it refers to genetic purity... Not only was he a just man, but he was also a pure genetic line from which the family of Man could be preserved, and also from which a Messiah could come to save Man, and battle the seed of Satan. Among his generation, Noah was perfect... Which assumes also his wife, his sons, and their wives.
Gen 6:12 And God looked upon the earth, and, behold, it was corrupt; for all flesh had corrupted his way upon the earth.
Gen 6:13 And God said unto Noah, The end of all flesh is come before me; for the earth is filled with violence through them; and, behold, I will destroy them with the earth.
The corruption at that time encompassed ALL flesh, the four (earthly) types of which are defined in Gen 6:7 - What had become corrupt were the flesh of Man, Beast, Creeping thing (roughly reptile), and Bird. That isn't to say that ALL flesh (individually complete, every instance) was corrupt, but rather that these types were corrupted in their ways... Corrupted enough to warrant destruction and renewal.
I would submit that likewise, animals that were 'tamiym' (genetically pure to their kind) were also preserved, in order to reestablish all flesh, not just Man... It is the only reason I can come up with that warrants the massive scale of destruction that YHWH chose. Literally, every single thing that held breath had to be wiped clean off the earth. If it was only Man that was corrupt, as the Christian tale is taught, why destroy everything? Why not just selectively Man?
I see I’ve pretty much confused us both by now! 8^)
Well, you've got to do what you're good at... : D