It's just a title that puts the subject in a nutshell.
We'd still die from decease or trauma (accidental or not).
Ok. Just like now. No biggie.
Without a naturally limited lifespan the human population would quickly outgrow this Earth and we would have to control the population with extraordinary means.
Why would it have to be extraordinary? Why would the human population inevitably outgrow the earth?
I don't think it is justifiable to become biologically "immortal" at the expense of other people's lives.
Why is it at the expense of other people's lives?
If "curing aging" is technologically feasible I certainly don't think humanity is ready for it.
Why not?
Btw. wasn't it technological immortality that doomed the Cylons? 
BSG sucks.