Thought we'd have replaceable eyes, teeth, hair, etc by now. When your vision goes, instead of getting new contacts or glasses, just replace your eyes with a ne

Thought we'd have replaceable eyes, teeth, hair, etc by now. When your vision goes, instead of getting new contacts or glasses, just replace your eyes with a new pair. You have cavities, just replace your tooth with another. The promise of genetic sequencing and research just hasn't panned out.