The same argument is used to silence the children of egg and sperm donors, if they happen to question the goodness of their conception. Are they saying that despite living happy and fulfilled lives, they would rather not exist? How ungrateful and how very sad.
The presumption in this argument is that as long as you are alive, you should be grateful and happy about the circumstances of your conception, because after all, it created you.
The absurdity of this argument becomes visible when it is transplanted into other circumstances:
- If the children of rape say they are against rape, are they saying they would rather not exist?
- Do the children of incest, pedophilia and prostitution have a duty to support incest, pedophilia and prostitution?
- Must the children of one night stands support random hookups and unprotected intercourse?
Despite the fact that it gave us life, we can recognize that the way we were created was unethical and has caused us and others great pain. We can be against hurting others in the same way that we were hurt.
It is thus no contradiction to be glad for one's life, and yet against the perpetuation of this failed experiment upon other children in the future.