>you could have instead had bad luck and been born on the streets in a third-world country to a drug-addicted single parent with no money and no prospects

No I couldn't, it's totally impossible for the embryo formed by my mother and father to have teleported into the womb of a junkie on the other side of the world. I was always and only going to be born to my parents.

I do agree that it feels like we're arguing different things, as I know you know this. And I am very suspicious of people who argue the "luck" angle here as it is usually an attempt to erase my entire history and assert that some random "unlucky" starving Ethiopian has just as much right to be in my shoes instead. When zoomed out, this can clearly be weaponised as a justification for mass migration.