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I really think you should only have a kid if both you and your partner are absolutely, unequivocally, totally sure. "Convincing" a reluctant partner cannot be the right thing to do. If you regret not breeding in 8, 10, 15 years why not adopt, or mentor a child? No one mentions that as an option, ever.
Off-topic, but what are all these new parents planning on telling their kids about climate change, anyway? "Sorry, honey, this is your problem to fix... we could have done something, but were more worried about our bohemian life choices."