On Antinatalism Fair enough, but I'm simply pointing out that existence is zero sum. If you are in a position to grant a good life, then you can bring a being into existence that may potentially flourish. On the other hand, if you view existence as a negative, I fully encourage you to not procreate, as that would weigh heavily upon your conscience.
I get that you are trying to combat harm, but if the entity doesn't exist before you bring it into being, then you aren't in fact harming anything. You are granting it the potential to feel positive and negative experiences, i.e. life. The alternative is absolute nothingness, so it's just a balancing act.
Is art ethical? Crafting positive and negative images, granting the potential for enjoyment and disturbance, intending for the love but preparing for hate, it's a lot like bringing life into the world, and I don't think it's rational to judge any individual life until the work is finished, like letting an artist get into their groove and witnessing their eventual portfolio after they are finished.