When an Old album sounds like new

I hope all of you had a good Holiday. Mine were certainly better than last year's. I got three new albums for christmas. I finally got Audioslave's new album "Out of Exile." I listened to the entire album and in my opinion, I think that it's great and I believe that it will be around for a long time. I predict that in the future, some kid will hear about Audioslave for the first time and they are going to buy one of their old albums for the first time and it is going to sound just as new to them as it did for me today. (Update: 4/27/17. OMG! What the heck was I thinking!? Audioslave broke up when douchebag Chris Cornell left the band without telling his bandmates!)
I believe that my prediction will come true because that is exactly what happened to me when I bought two old albums with my christmas cash. I got Metallica's album "...And Justice For All" and The Who's "Who's Next."
"...And Justice for All" came out in 1988, which is almost twenty years ago (I was 6 at that time). Even though I've already heard some of the songs such as "Blackened," "One," "Harvester of Sorrow", and "Eye of the Beholder," It still sounded new to me because I got to hear songs I've never heard before such as "Dyers Eve" and my new favorite "To Live is to Die."
To any Metallica fans: I know that there are other albums that you think are better, but I'm still catching up. I have "Ride the Lightining," "The Black Album," and "S & M." Up next is "Kill Em' All," "Master of Puppets," "St. Anger," and any I haven't mentioned here.
"Who's Next" came out in 1971,which was 34 years ago (I wasn't even born yet). All you Who fans already know that this album was stuff salvaged from Pete's once abandoned "Lifehouse" project. Most of you also know that it's not abandoned anymore. Anyways, Even though I've already heard the songs "We Won't Get Fooled Again, " "Behind Blue Eyes," and (Do I really need to go on? most of you have heard them too) I got to hear the songs that the classic rock radio stations don't play over and over, such as "Love Ain't For Keeping," and the other B-side songs. This is what makes buying an old album worth it, because the longer a band has been around, the more the A-sides get played out. Just hearing the b-sides makes an old album feel like new.
To those wondering what I mean by the feeling I get from discovering something that feels new to you. Just think back to a time when you first got an album that you thought was the best album ever. You love it so much that you can't help but play it over and over.
Unfortunately, this feeling doesn't last. I try not to play an album too much otherwise it will get old fast. I learned that the hard way when I used to listen to The Beatles every single day. Don't get me wrong I still love them, but now I only listen to them once in a while.
Another way I prevent myself from listening to a new album too much is to dust off the ones you haven't heard in a while and listen to those, which don't sound so old anymore.