Meanings of own obsolescence in English

I know, I know -conniving at our own obsolescence.

To Maurice, she represents beauty, vitality, and his own obsolescence.

But there I was-sittingatop Doc's operating table, the sound of dueling dehumidifiers humming in the background-facingmy own obsolescence, my own death.

'We're standing here with the universe in our grasp and, instead of furthering our own destinies, we connive at our own obsolescence.'