>It is literally unnatural to deliberately choose to not have children
Something's being natural or unnatural has no bearing on whether it is right or wrong. I assume that when the OP says "we can no longer justify" they are making a moral claim, which means that saying it's "unnatural" to not reproduce is failing to be relevant.
Something's being natural or unnatural has no bearing on whether it is right or wrong. I assume that when the OP says "we can no longer justify" they are making a moral claim, which means that saying it's "unnatural" to not reproduce is failing to be relevant.