Especially since my all time favourite album "Phaedra" by Tangerine Dream is 41 years old! I'm 47 but discovered that album as a teenager in the early '80s.
You'll know where I'm coming from as I'm 43 but grew up as a nipper (with older brothers and sisters) listening to Led Zep, Floyd, Sabbath etc.
In terms of this thread though - a few bands stick in my mind.
Floyd, Iron Maiden & AC/DC
Maiden - first saw them live as a kid in 82 and then saw them numerous times through to about 1992. For me those 10 years were a lifetime and even though they're still going - I still consider their 90s material as 'new'. The reality is that material is nearer their beginning than the present day.
AC/DC - Must have been 91 or thereabouts I saw them at Donnington and thought it would be a nice chance to see them play for one last time. LOL
Films, Actors, Events - it plays with my mind.
Anyway - examples aside my point is how the passing of time does funny things to us as we age. By that I mean the 'scale' isn't constant. It's like a ruler where each of the first 10 cm measure 1 cm, the next 10 cm each measure 5 mm, the next 10 cm each measure 2 mm and the next 10 cm measure 1 mm.