but yet:[...] The example was the US as it has changed over the last 300 years which is significantly more drastic than 1965 to 1975. In many campaign settings that's long enough for kingdoms to rise and fall, major land wars to change the map, dragons to wipe out entire forests, and multiple deities to die and/or get resurrected...
[...] Look at Forgotten Realms.
It has been at the same High Fantasy Quasi-Medieval Borderline Renaissance technological level for about 3,000 years. [...]
[...] it's not about "Conserving" society. It's about preserving their personal lifestyle the way they like it in a world that is changing around them.
[...] Elves in most media preserve, rather than try to change. It's, like, their driving goal in most narratives to be the stodgiest sticks in the mud they can manage while the protagonists beg for help and it falls on largely deaf pointed ears forcing the protagonists to go out and do it themselves. [...]
It's true that elves are frequently presented as stodgy, but I think that's more a reflection that elven societies are typically presented as "in decline" rather than as a product of a racial worldview. They want to conserve because all their awesome stuff is behind them. Their best crafters and heroes are dead, cities have fallen, birth rates are down or have stopped, etc.
If you rewind the tape a little bit though, those societies had great crafters building wondrous things, heroes attempting mighty deeds, cities of magic and industry etc all run by those same, now more "conservative" elves.
That's a good observation, and I think the trauma bit of longevity didn't get quite enough coverage in upthread. So, for example, lots of people who lived through the depression were permanently weird about money because of it. Maybe the 800 year old elves who lived through the time of FIRE AND MADNESS, still aren't quite right, and carry their neuroses from that time into the present. My boy Thranduil, the archetypal elf king, is still whining about the mean people who took his necklace and flipping out about dragons... for example.[...] The good times hold firm and so do personal traumas.
But imagine how different we'd be as people if we could still feel the tail end of the Cold War, Bosnia, the OKC bombing, Desert Storm, the LA Riots, Hurricane Andrew, etc etc with the same clarity with which we remember our favorite shows and the general vibe? [...]
Elves do not exist. Magic warps the minds of humans and edits their memories to include elves out of a strange need to “teach” humans.
Dwarfs know this and it makes them grumpy.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.