I assume you all sometimes look at the demographics of your listeners, such as their age, right? In my opinion, the graph that Spotify uses for this gives a quite distorted picture; the age groups used are not all the same size. One group (for example those aged 23 to 27) covers 5 years, while another (those aged 45 to 59) covers no less than 15 years. That makes a comparison difficult. As an example, see the graph of my listeners age (over the past 28 days) below.
Now I like statistics, so I did some simple math to see in which age group people actually listen to my music the most. And guess what? By far the majority (see below) of my listeners are between the ages of 18 and 34, with an emphasis on the group aged 23 to 27. Quite surprising, I thought 🙂