> even if your lack of sleep kills you at 70 rather than 80

If only it were that simple.

There's lifespan, and there's quality of life. Diabetes attacks both.

So, not only will you likely die earlier, you're at far greater risk for developing a degenerative disease - possibly cognitive in nature. Or organ failure. Or amputation. Or blindness. Or all of the above.

And if you don't, you'll still spend your remaining days worrying about it.