I think there are issues to consider, and there are people who knowingly should not have children who are doing harm by having them. Usually though, it's not their fault for these bad things. They're things everyone has to deal with.
(There's also plenty of ethical considerations regarding climate change and tons of other factors that should be considered when having children. There is no real need for anyone to have kids, so you should only do it if you are going to do your best to make their lives good.)