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

Weep for us not. While there's undoubtedly a plethora of great music whose existence preceeded my own, the following are post-birth:
Gang Of Four
Joy DivisionBjork
The Cure
RadioheadD'AngeloAlan Parsons Project
The B52's
Talking Heads
Beastie Boys
Public Enemy
Rage Against the Machine
Beach House
Blondie
The Clash
Cocteau TwinsDaft Punk
Broadcast
The Flaming Lips
DeerhunterDigable Planets
A Tribe Called Quest
Echo & the Bunnymen
Prince
Portishead
James Blake
Khruangbin
Sufjan Stevens
Lower Dens
M83
Mac DeMarco
Mazzy Star
Massive Attack
Men at Work
Mogwai
My Morning Jacket
OutKast
The Pharcyde
The Police
The Psychedelic Furs
The Ramones
The Roots
The Shins
The Sound
Spoon
Stereolab
The Sundays
Television
King Gizzard and the Lizard Wizard
Thee Oh Sees
Bunch of others...
Some context...first real concert was Floyd (Division Bell Tour - saw Water's at a separate show). Seen Petty live - thankfully. Grew up on wide range of stuff (Motown, classic rock). Discovered Jazz and classical later. Also discovered early progressive rock and motorik later (King Crimson, Can, etc). Beatles are in my stable. Point is, music for me is like time travel...gems to discover past, present, and glimpses of the future.

Put me down Old Yeller style the day I can't find something new to listen to regardless of the period in which it was born.
(Typed while listening to Bjork's Post on my headphone rig.)

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. 🤷‍♂️

@mwinkc167
Thank you for articulating so well what I could not.
I can see how growing up in the era of rock’s formative years was awesome. And I’m very thankful for the music born from it.
Fortunately, we have access to all of it and more. I’ve spent a good deal of money on music from that period for my personal library. And I continue to support today’s artists as well.
Glad music is a thing we can all enjoy.