I think Edmund Burke made the point about the family being the central unit in the natural order of human society. "Little platoons," he called them?
Ultimately, none of us has the right to life. We're all gonna go sooner or later. Natural rights are agreed upon by rational people to protect us from each other, not from nature.
But no one has ever "agreed" about any such thing. And who gets to decide which rights exist, hmmm?
I'll take the Biblical G-d, thank you.