Not better and happier people instead of us / by Nathan Jones

What we are attached to in ourselves, in a reasonable self-concern, is not just our bare metaphysical identity, but also projects, friendships, and at least some of the important features of our personal history and character. If our lives are good, we have the same sort of reason to be glad we have had them rather than lives that would have been even better but too thoroughly different, as we have to be glad that we exist and not better and happier people instead of us.
— Robert Adams in Existence, Self-Interest, and the Problem of Evil (1979)