Hriston
Dungeon Master of Middle-earth (He/him)
The Elves and Dwarves of D&D are, in practical terms, Homo dryadales and Homo nani, not Dryadales sapiens and Nani sapiens. They are us with minor twists. Orcs might be in the Genus Paranthropos or even Australopithecus... but they're still essentially subfamily hominidae. They should be no more alien than Pan troglodyties or Pan pan. Even the untrained eye can make out the motivations of a chimp or banobo (hint: 3F's Feasting, fornicating, and fighting, with a dose of fellowship on the side.)
The elves lifespan is long... up to a millenium... but a young elf in his 30's is likely to be as careless and carefree as a human his own age. It's the ancient ones who should be alien in perspective. And I don't recall 7 year pregnancies (its likely not much longer than humans), but recall a 7 year average between children... tho' I don't have the 2E splat books handy to check. Many of the source mythologies, however, give the gestation time of elves as 10 or 11 months...
The dwarf race of modern fantasy is almost whole-cloth tolkien. The other sources tend to have dwarves as either Homo sapiens nani (in other words, a stable subpopulation similar to the tribes of short humans in PNG and Africa), or as they typically are in modern life, random mutations.
So, really, they aren't the ones that should be all weird. That should be the Dragonborn, the Aasimar, the Deva, etc.
My take on this is that Elves, Dwarves (Dwerrow), Orcs, Goblins (incl. all Goblinoids), possibly Treants and Trolls, and certainly Hobbits (Halflings) are all members of Homo sapiens. I've long suspected that Dwarves should be identified with Homo sapiens neanderthalensis, due to shorter stature but heavier musculature, larger brains, etc., and Elves certainly are the closest relatives, physiologically, to what we call "modern" humans. The difference between Elves and Men is not so much physical, although there are minor differences due to the long sundering of the two lineages, but is rather one of spiritual growth, as if a particular "race" of humans had discovered the secret of living a perfectly yogic existence, transcending the need for sleep, and even death, because of a closer relationship with the gods and a more perfect way of existing on Earth. That's how I conceive of Elves in my worlds, and I've obviously been influenced by Tolkien in that regard, but since he is the sole inventor of the modern concept of the Elf (whereas previous authors mostly considered them as creatures more akin to Tinkerbell) I think that is probably most people's starting point for how the D&D Elf is thought of. I do find these Elves strange, but inherently relatable, because they represent the higher self of mankind, like a race of bodhisattvas, and therefore are an aspirational model for a higher way for humans to live.