Okay... But there's so much more to life than that.
People work jobs they enjoy, have relationships, have experiences and generally love living.
To arbitrarily deny someone existence because of a shadow focused view of the world or an imagined joyless experience is at best pessimistic and at worst a projection of the parents fears onto the imaginary child.
I shouldn't exist. Due to medical complications during pregnancy my mother was advised to abort me. She gave birth to me and instead raised me badly 🤣
I'm glad that's the way it happened. Life is hard sometimes but it's also wonderful a lot of the time.
The issues you name are real, as real as the joys and pleasures of existence.
There's a reason even mad Max fights to survive. Because even that world is better than not existing. If he wasn't born, he doesn't get to make that choice.