I can't knock some individual's decision, it is theirs alone to make, but the decision-making process strikes me as so extremely odd that it is hard to relate, and it's very difficult to believe that this is really about climate.

It is almost in some sense insulting to one's ancestors, who traveled over glacial passes in search of the next 8,000lb mammal to eat. What would they think of these environmental setbacks as a reason to lay down your future? I am reminded of W.H. Auden's poem, Ode to the Medieval Poets, which opens:

    Chaucer, Langland, Douglas, Dunbar, with all your
    brother Anons, how on earth did you ever manage,
       without anaesthetics or plumbing,
       in daily peril from witches, warlocks,
 
    lepers, The Holy Office, foreign mercenaries
    burning as they came, to write so cheerfully,
       with no grimaces of self-pathos...

Something just seems deeply off about the modern pessimism, and it definitely did not start with climate. Climate seems like a salient thing for people to point to, but something that is merely salient in this rhetorical way. Even the people in this thread saying that this resonates with them mention that climate is just one of an array of reasons for them. It's not like, after all, birth rates plummeting below replacement for many populations had anything to do with climate reasons until very, very recently. I think we need to look a little deeper than that.

(full text of that poem: https://simonsarris.com/ode-to-the-Medieval-Poets)