You're not alone. The ever increasing age of those who regular attend football matches is a concern for many clubs and the FA.A bit off subject, but just looking at the photo of his goal against Utd in 1995 it is noticeable just how much younger the support is in the photo compared to now. Worrying.
Since the implementation of all-seating stadia in the top levels, the demographics have changed considerably due to the increasing costs.
Tickets (S/T or individual) may still be relatively cheap for children, but for adults it has took a huge jump. Not everyone is able to afford it
Include the fact that when many of us were younger you could go as a teenager (or younger) by yourself; now it is a taboo. Add that to the cost.
If you looked at the average attendee at Goodison, I'd confidently suggest it was a late thirties to forty something male. It can't go on like that.