Correction, they INVENTED the cute boy-band template and then moved far beyond it. And keep in mind that I was 7 at the time. It wasn't the content of their songs that impressed me so much as it was their delivery. Very tight, very strong, very purposeful, and yet fun to the point of being sarcastic. Almost like they were making fun of the whole teenage boy-meets-girl meme. And a month or so later the Rolling Stones came on the show, And Mick Jagger was the nightmare boy every parent was afraid their daughter would date. So ofcourse every daughter wanted to date him!
This was the rock-n-roll theme. It was a youth uprising, and every young person saw it, and heard it, from Elvis to the Beatles to Led Zeppelin to Iggy Pop, and on. And they reveled in it. They finally had a voice in a world being run (badly) by the adults and there was nothing the adults could do about it. That was rock-n-roll.
Yes, I know. It was yet another consumerist "youth rebellion" promoted by big business to get kids to part with their parent's money and idolize sordid musicians instead of their former cultural heroes. Teenagerhood is a made up concept created by advertisers to turn teens into consumerists. It really came to a head in the midcentury, and your generation was swept away by it. Once something is mainstream and corporate, there's hardly any real rebellion going on.
Anyway, I'm not into rock music to make my parents mad. That's rather juvenile. Sorry, I'm not going to cry into my beer over the passing of the '50s to '70s era of music. What great music was made during that time is still there to be listened to, and there's revival scenes and acts influenced by it keeping it going. I personally enjoy neopsychedelic music a lot, such as the Black Angels and Jess and the Ancient Ones, for example. Whatever genre or style you like, there's scenes keeping it alive with young bands.
The rock scene and the business practices behind it have changed for the better, too. Not as much misogyny and gross behavior towards women. There were a number of rock songs from the early days outright sexualizing underage girls (hell, many of those grown rock stars married children or had (abusive, rapey) relationships with minors, from Jerry Lee Lewis, to Elvis, to Steven Tyler. And that was okay. That was acceptable. They behaved as absolute scumbags and were drug addicted degenerates in general.
The music industry was basically like the Mafia, and they could care less about ethics. Now that stuff isn't acceptable to the majority of rock fans now. Women are treated with more respect and even the gross behavior at rock shows has subsided (no breasts flashing or demands to see them anymore, and I've been to shows in the early 2000s where both happened).
Now it's rap and pop where women are treated like trash, and it's okay to be like the rockstars of yore. (To be fair, there are movements in both of those genres which push back against the misogyny. Feminist rap has existed since the '80s with rappers like MC Lyte and Queen Latifah. I, myself, love the rapper M.I.A. and think she's one of the greatest songwriters there is.)
Rock isn't dead at all. Far from it, it's matured. It goes through cycles of mainstream popularity and then goes back underground, reflects on and revitalizes itself and then catches on again and after a while of popularity, becomes a stupid parody of itself, people stop liking it as much and then it goes back underground, etc.