I feel bad for GenX'ers that missed out on the 60s and 70s.

I feel sorry for them for a totally different reason. Egocentric children were deplored not encouraged. Consequently the number of egocentric children that developed into adults were few and far between, not in plague proportions as they are today.

How many do you know?

I'm sure those who lived during the hey-day of chamber music feel quite sorry for all of us.
In all seriousness, if you want us to admit that we missed out on something only an earlier generation could appreciate, then sure. Would it be great to have seen Zep live at peak power? Duh. . .of course.
When a GenX'er admits a shared appreciation of said bands, instead of 'bonding' over it or appreciating it together, the OP finds a way to yell 'get off my hill' as if there's a threat to some exclusivity. Maybe that wasn't the intent, but it came off rather condescending.
Should I have declined to see Buddy Guy live at the Keswick due to my generational alpha-denotation?

Oh well, thems the breaks. 🤷‍♂️

Those poor f-cks came along when girls dropped their panties without a 2nd thought. I feel no sympathy just jealousy.

From Motown to the British invasion from booze to boo, from don't question authority to questioning authority,  from crew cut to long hair from bras to boobs, tight pants to bell bottoms. Are you kidding me there was never a better time for music or for growing up period amen!
It's 1966 I'm 18 living in Jersey I go visit my bohemian cousin living in Greenwich Village dead set on taking my first legal drink I fly up her 4 story walk-up on Cornelia St. Susan I excitedly say let's go drinking she smiles and hands me my first joint ( Flemington flash grown on her friend's farm in Ringos NJ) and says try this instead. Wooo I put smokey, the temps, and the tops back in the wooden fruit crate and went and bought the Stones, Beatles etc.to play on my Dual TT with a cheap shure cartridge, and AR speakers. Timothy Leary's dead no, no, no, no he's outside looking in...

You had to be there to experience it, and I was, magical time for sure. Unfortunately, I presume many weren't able to experience the live concert experience based on where they lived. I lived in Ann Arbor Mich. in these decades, really experienced the zeitgeist of the moment first hand. So, for me, I'd have to agree, the greatest time to be music fan. Quantity and quality of bands coming though in those days unsurpassed.

Still, I've had many a fantastic musical experiences in subsequent decades. The concert experience has certainly changed over the years, and younger generations can never live that 60's and 70's experience. I'm not sure I feel bad for them, its more like its sort of frustrating they can never understand my special feeling for that era.

As far as music per se, I won't argue about greatest eras of music.