Are you serious, or just a Concern Troll? First of all, there is zero chance that people will cease having children because of the small percentage of us who’ve chosen not to. The vast majority of those that want them or feel they should have them will continue to do so. Plus, birth control information and devices (much less abortion) aren’t easily accessible in many places even for those who want to limit their family size, much less avoid pregnancy altogether. So, the species will surely go on.
Hence, there’s no need for people who don’t want kids, for whatever damn reason it may be, to force themselves to, nor for you to care.