It's true, though, all the overfishing, pollution, greenhouse gases, desertification of farmland, extinction of species is all due to the huge explosion in the number of humans on the planet. We're chopping down all the remaining forests and turning the planet into farms and monocultures. At this rate we'd better hope that an ecosystem of just cows and chickens is sustainable.

We don't have to do anything. As women (e.g. in sub Saharan African countries) get more education, the age at which they have their first child increases. As expectations of having your own place increase, and rent increases, the age of having the first child increases. If you want to go all the way, look at Japan, with its aging population and young people who don't want to have sex. Many of them are shut-ins, hikkomori.

Even without this virus, we have been moving towards a world where everyone lives on their own, orders in, gets amazon deliveries, etc. Both parents work for corporations, kids are put into a glorified daycare center run by the government, everyone is overmedicated, from kids (ADHD) to adults (opioids and antidepressants) to elderly (nursing homes) and this is called "a good economy".

If we lowered the workweek to 30 hours, and implemented a permanent UBI (as Spain may do now, and Alaska has done for a while), we could have people spend more time with their families. And if we moved towards increased collaboration rather than competition, we would have a lot more value for the world (think wikipedia vs Britannica, Linux vs Windows, the Web vs AOL etc, Netscape vs IE (thanks for open sourcing that one btw :)) you get the point. Science vs Alchemy.

Anyway, the world has adjusted since we greatly reduced child mortality, and some countries are just playing catch-up. Eventually, we will have a smaller, richer population, with robots and automation doing a lot of the work. That's the future. The only trouble is, shortly after that we'll all live in a zoo controlled by AI :-/