Those stats are slightly misleading. Life expectancy stats are from birth and take account of early death. The life expectancy of someone who has reached 65 is not the same as general life expectancy. And in the case of an ARF, we’re generally talking about the life expectancy of two people, one of whom is female. That’s the key point with an ARF. See the link below. There is a 51% chance that, at age 65, at least one spouse will live at least another 24 years.The latest CSO life tables show life expectancy at 65 is just under 18 for men and just under 21 for women, or an average of about 19 years.
You can probably adjust up a year or two as someone with a typical pension fund will live longer, rich people generally do.
Your time horizon at 65 is not likely to be a quarter of a century though, particularly for men.
An Irish man with a 60-year life expectancy is currently aged 19.
I have a feeling very few of us posting here are that young