Haha thats funny, I often have a though of that like you do, too.
About ATRL, maybe somewhere around mid20s, I wont be here anymore or even faster than that. Because next year I'll get into my college, I dont know if I can get much free time on visiting sites like I do right now.
I'm also a huge fan of Britney and I've been a fan of POP music, yes, it's techincally weird to find yourself still listening to these pop stuffs when you're 30, 40, 50 later. Maybe we will move on towards to a new "genre" of music and when you';re 30, 40, or even 50, when you check back your CD cases, you'll probably laugh on your CD collection. Lol. Or even you'll cry when you hear your fav songs in radios back then when you were at this time and we'll probably think bout our past-memory with certain songs.
That how song lives up our memories forever.
Well, I've been a huge fan of music, I hope I'll still be so when I get older and until the day I die. Lol.