Yes, this is true. For me the way that I deal with the reality of a planet becoming a shitty place to live is to not have children. It is the best way for me to cope with the situation. People can choose to do otherwise.
Have you considered letting your children decide whether they want to be alive on whatever the future has in store for this planet? Life is optional; they can opt out at any time. But my hunch is that they'll appreciate being alive and decide to make a go of it, however tough it is. After all, there is no alternative; the only life they can have is the one you give them.