How Do You Know When You're Middle-Aged?
I say, wait until you are dead, and then divide by two. It is always better to be late than never and this work around will yield accurate results, more accurate than just wondering or comparing yourself to a list.
For instance, Jimi H. was 29 when he died, so that would make hm middle aged around 14. 5 years.
Jesse Q. Screed