The thing that I still understand in the comic is why the hell poor people find it ethically acceptable to produce children when the children will later have such problems in life.
If I were a poor child, I'd be really furious on my parents that they didn't use condoms (or another method of contraception) to prevent the suffer that I'd be in from the start.
The human mind and human decision making do not work in the way that you're suggesting, especially when it comes to reproduction.
If you were a poor child, you might not even have been taught or have ever learned the self-awareness necessary to be angry at your parents for such a decision. Plus, I find it hard to believe that you'd have the exact same take on poverty and birth rates were you actually poor, and not simply hypothesizing about what it's like to be poor.
If I were a poor child, I'd be really furious on my parents that they didn't use condoms (or another method of contraception) to prevent the suffer that I'd be in from the start.