I find this pessimism a bit lost and deeply anti-human.
All cars use a shit load of metals, plastics, and rubber, which has to be mined or harvested. The *marginal difference* with electric car is the battery, which is lithium, nickel, graphite. Congolese children don't work extracting lithium from Chilean deposits. If you are buying a new car today, buying an electric car over a traditional car is a *net good* decision.
Homo sapiens -- nay, all *hominids* -- is a speck of dirt on the history of the Earth. We are neither owed anything by it, nor owe anything to it. For the microsecond on the cosmic scale that we as individuals exist on this earth, we only have to optimize our time on it. Is that a "selfish" motivation? Sure is. So are 99.99% of decisions we've ever made across any other dimension in life. I'm not governing my life based on what might happen to this round ball in 3 million years.
I want the best life for me and for my family. I eat red meat, because it is delicious. I compost and recycle, because it makes *me* feel good, at a cost of *nothing*. I'm not wantonly wasteful, because it's not satisfying. But I'll splurge on my kids, if satisfies them.
And we should want to have kids, because it's the best and safest time in human history to be alive. They'll benefit from the accumulated knowledge and technological advancement from 50,000 years of scribbling graffiti on cavewalls.
If you -- relatively privileged people from the privileged parts of the world -- dont want to have kids, it's not going to matter. People from the relatively laggard parts of the world are going to have them *anyway.* Generation-for-generation, they'll just live a slightly worse life than your kids might have. And they'll steer the future in a relatively worse direction than your kids might. (this is merely broad level extrapolation).
Either way, they can all be fed. Surely you've heard, access to food has not been a natural problem of production - its been an 'artificial' problem of distribution. Take the look at global food yield, and show me what 'effects of climate change' its been experiencing. Also note the relative growth of yield vs population.
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TLDR civilization has been doing good, actually. The world is not ending soon. You dont have to believe in what Swedish teenagers say and do things because Greta told you to. You can do good things, for the sake of feeling good.
I choose not to be doomer-pilled. You can too.