Not sure how reassuring it is to you, but these computers often have a longer life on the used market, even resold multiple times. The laptops in my Hungarian household always come used, simply because they are selling here capable machines in beautiful condition, below 50% of the original market price. And when we need something new, they get resold as well.

Now of course, there are the videos from third world countries where they burn e-waste for gold, so it's not all dandy, but hey. At least we can be a little more conscious.