Summarizing your first paragraph: There are not a good band, because they are fine, don't deserve as much praise, they are the premier grunge band ( I would argue punk band), and they are a flash in the pan genre. (Kurt Cobain said, " I'm a punk rocker".)
My response:
Rolling Stone magazine rated Nirvana higher, than Eric Clapton live performance.
https://www.rollingstone.com/music/...-best-episodes-119361/neil-young-1993-120589/
Summarizing your second paragraph: Nirvana's music had it's time and place, but should stay in the past. Once Nirvana's music ended, really bad music filled it's void, such as post grunge bands like the Foo Fighters and Nickelback. It's Nirvana's fault for the crap music, that came after.
My response: Nirvana pretty much ended Michael Jackson and Metallica's dominance in the music world. Should Michael Jackson and Metallica take credit for Nirvana's rise to fame? Your reasoning is fatally wrong, and misguided in my opinion.
Summarizing your third paragraph: Your saying, it's my age that makes me like Nirvana, but no one outside my generation cares about Nirvana. Nirvana is o.k., but they shouldn't be set next to the Beatles, or Rolling Stones.
My response: Rolling Stone magazine rated Nirvana higher than...
Neil Young (1993), Alicia Keys (2005), Hole (1995), Mariah Carey (1992), LL Cool J / A Tribe Called Quest / De La Soul (1991), Eric Clapton (1992), Alice in Chains (1996), Jay-Z (2001), Pearl Jam (1992).
https://www.rollingstone.com/music/...-best-episodes-119361/neil-young-1993-120589/
Nirvana is rated as 25th best band of all time by ranker, regardless of generation. Nirvana was rated higher than John Lennon and Iron Maiden. That might go against everything you just said in the paragraph, it's only the general population.
Nirvana's Nevermind album is rated by Rolling Stone Magazine as the 6th best album of all time. Right behind Abbey Roads by The Beatles.
https://www.ranker.com/crowdranked-list/the-best-rock-bands-of-all-time
https://www.rs500albums.com/50-1/6
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Summarizing your final paragraph: You discredit my opintions, due to my age.
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My response: If you can't come up with a reasonable response, you just make a generalization. I disagree, I think most of the popular stuff pre-1995, had incredible music that was popular, and had many great artist for every generation prior to the year 2000. After the year 1999, music just got to over produced, with less talent in the grand scheme of things. Yes, there are some hidden gems here and there, but we have been in a drought for many years in the entertainment industry, including music.
Maybe computers and technology, killed the entertainment industry?!?! To simply this, how many people think System of the Down or Dream Theater is better, than early Pantera and Metallica??? Or who thinks Blink 182 or Foo Fighters is better, than The Ramones and Nirvana?
You can believe what you want though, your just wrong in my opinion. It's o.k..