The Asymmetry endorses neutrality about bringing into existence lives that have positive wellbeing, and I argue against this view for much of the population ethics chapter, in the sections “The Intuition of Neutrality”, “Clumsy Gods: The Fragility of Identity”, and “Why the Intuition of Neutrality is Wrong”.
You seem to be using a different definition of the Asymmetry than Magnus is, and I’m not sure it’s a much more common one. On Magnus’s definition (which is also used by e.g. Chappell; Holtug, Nils (2004), “Person-affecting Moralities”; and McMahan (1981), “Problems of Population Theory”), bringing into existence lives that have “positive wellbeing” is at best neutral. It could well be negative.
The kind of Asymmetry Magnus is defending here doesn’t imply the intuition of neutrality, and so isn’t vulnerable to your critiques like violating transitivity, or relying on a confused concept of necessarily existing people.
If bringing into existence lives that have positive wellbeing is at best neutral (and presumably strongly negative for lives with negative wellbeing) — why have children at all? Is it their instrumental value they bring in their lives that we’re after under this philosophy? (Sorry, I’m almost surely missing something very basic here — not a philosopher.)
You seem to be using a different definition of the Asymmetry than Magnus is, and I’m not sure it’s a much more common one. On Magnus’s definition (which is also used by e.g. Chappell; Holtug, Nils (2004), “Person-affecting Moralities”; and McMahan (1981), “Problems of Population Theory”), bringing into existence lives that have “positive wellbeing” is at best neutral. It could well be negative.
The kind of Asymmetry Magnus is defending here doesn’t imply the intuition of neutrality, and so isn’t vulnerable to your critiques like violating transitivity, or relying on a confused concept of necessarily existing people.
If bringing into existence lives that have positive wellbeing is at best neutral (and presumably strongly negative for lives with negative wellbeing) — why have children at all? Is it their instrumental value they bring in their lives that we’re after under this philosophy? (Sorry, I’m almost surely missing something very basic here — not a philosopher.)