Humans begin dying when we are born. For most of us, the process of dying is rather slow. That explains why life expectancy in developed nations has risen into the 70s.
Yes, some of us die before our time while others live far longer than expected.
Life is that way; weird sometimes, right?
My life expectancy was not quite 70 years when I was born so I have exceeded expectations by a few years. The beginning of the end— not counting birth— started with ALS. Average life expectancy for those with respiratory onset ALS is about 36 months.
My first visible symptoms of ALS appeared 36 months ago. Based on a growing list of more severe symptoms, the final end is near.
Typical respiratory onset means the severe breathing difficulties that usually show up at the end of ALS and often cause death, actually mark the beginning of the disease (along with camptocormia; bent spine syndrome).
That situation does not exclude other more typical ALS symptoms, though. Limb muscles still may weaken and cramp frequently. Speech and swallowing can be affected, too. Even the heart can become impaired.
The longer one lives with ALS the worse it gets.