If you study the various versions, Masoretic, Samaritan and Septuagint, a number of the ages differ. At some point someone reduced Methuselah's age because it would have meant he survived the flood, which didn't fit their interpretation of the Noah story.

That said, most of the ages in Genesis were incorrectly translated from Sumerian cuneiform due to them having different numbering systems for different things which reused some of the same symbols (why would anyone find that confusing???). Whoever copied those numbers into the Bible used the wrong numbering system. If you convert back and use the numbering system for dates and time, you get regular ages. For example, Methuselah didn't live 969 years, but instead, 85 years.

to expand-- the original poster shows that this is in Gen 6. But man was created a few chapters earlier. Thus, if one accepts the genesis creation myth as some standard of truth, God's original plan was that:

we are created in his image In his image we are created. Man and woman we are created.

i.e. the bible says god intends us to be as fully-formed and perfect ("immortal") as god.

addendum: the form I gave above is a well-known poetic form where the rhyme is in the ideas. Thus the very strong implication that the image of god is "man and woman"; a full being has both.

addendum II: Recall also that this says a full person should have both male and female aspects; Eve was split off from Adam (rib surgery). This says NOTHING about sexual orientation. Just as Jesus said NOTHING about it. Homophobic attacks go against the nature spirit and word of god as recorded in the bible.

How is this in any way related to the OP's post about lifespan?