the average life expectancy is about 75 yo
It's worth visiting how those averages can deviate when you add on additional clauses though.
With gender for instance, males see a reduction in life expectancy compared to women. Within certain disorders and lifestyle choices, you can see your life expectancy go even lower.
For myself, the average life expectancy for someone on the schizophrenic spectrum is around 60 for males and 68 for females, and insomnia is liable to shorten it even further. I'm also not exercising everyday and my diet's only real merits are over it's lack of fast food and binging urges that only extend as far as sweets.
My genetic line seems to age slower than normal, but that's pretty much my only real advantage right now.