Ultimately, the responsibility lies with the consenting adults who willingly engage in the course of action that leads to the procreation of a new life.I posted earlier in disagreement with this. I think it's fair to say that a belief in the sanctity of life instills a personal responsibility to help people in need as well as advocating for the life of the unborn. And in light of the ruling, the future will likely have more unwanted children. Sanctity of life extends beyond the womb. So I think it's a fair question.
But, it's not a logical conclusion that support of overturning RvW instills a responsibility for those kids who are born because of it. Any responsibility for helping is derived from a sense of compassion for those kids. So, if you can't adopt those in need, support organizations who help.
That said: who is it, by and large, contributing of their own resources toward remedying such social ills? Generally speaking, the right does so out of their own pocket. The left wants to take from our pockets to give to the government to provide. It is easy to be magnanimous with the compelled taking of other people's money.