Many scientists reckon we will be able to extend life significantly in the next few twenty years which of course would buy time for further developments to extend life further and so on.
It's all down to advances in genetics and the study of cancer cells which never die.
So, it is possible, that people who are children or in their youth today will never die naturally.
Statistically though you're likely to die of an accident in a thousand years. So the chances are, if you are young, your death is likely to be a violent one.
I agree with Artie, it is more to do with the quality of your life up to the moment you die.
I certainly wouldn't want to end up sitting in a chair, with tubes hanging out of me or staring into space with a vacant look in my eyes.