So, your anecdote is that you've never had your life save by antibiotics. So what? Are you suggesting that the scientists are saying that 100% of the population will die without antibiotics? No, they are saying that many more people will die without them than with them. This seems self-evident to me, but apparently people like you are more difficult to convince. You do seem easily convinced by anecdotes, however, so, I'll see your anecdote with a couple of my own.
When he was about 5, my son was running on the deck and tripped. As he slid along the desk, a very then (willow) tree branch got shoved up into his leg about 4 inches or so. I pulled out as much as a could, but a good inch or so of tree branch broke off and got left behind. Our choices were to treat the infection and let his body gradually dispose of the foreign substance or cut his leg open and remove the branch. Either way, without antibiotics he would have been quite unlikely to survive.
As a child my mother got strep throat. Her family could not easily afford a doctor and so that waited to see if she would just get better. Instead, it developed into scarlet fever. She had to spend a year of her childhood confined inside and on heavy antibiotics or she would have died.
I myself have had numerous infections: strep throat (many times, mostly as a child), bronchitis, etc. At least one of these would have been fatal without antibiotics.
So, by these anecdotes, three of every four people will die without antibiotics, right? Wrong. Anecdotes aren't statistics, so stop trying to marginalize real issues with "well it's never happened to me" bullshit, OK? We are all very impressed that you've lived 50 years and never needed antibiotics except for preventative purposes, but you are not the norm.