We may claim a pension at 65, but it's increasingly common to work well past that milestone.
Why do we need to bother with words like elderly at all? Well, because details matter when you're telling a story.
Whether someone is a child, an adult, a man, a woman, a grandmother, a father of seven, all help to build understanding of the story.
And they can be very significant details - in last week's widely reported story about a woman cannabis dealer it would have been a very poor reporter who didn't include that she was a 68-year-old grandmother.
So sometimes we use shortcut terms like "elderly" to quickly paint a picture.
And sometimes people disagree with our assessment.
I'm 36, so you could, I suppose, call me middle-aged.
Technically, I'm in the middle years of my life, but if I read that about myself in the newspaper I'd probably spit out my morning coffee as well.
Age, as Rob Smith eloquently pointed out in our letters page on Friday, is relative.
But sometimes it is very relevant.