I've found that when I come across one of those old magazines, I can spend hours (literally) reading it while new issues of Stereophile (which subscription I finally dropped) keep me occupied for little longer than one session on the toilet.
This may reflect the relative amount of content. After a month, with some exceptions (some turntable rebuild articles by Art Dudley stand out), the Stereophiles get donated to a local charity shop. The old Audio, High Fidelity, etc. get filed, safely.