They can. Bonus feat for a second +CON.Not so much with how D&D has typically presented the races. Dwarves are a different "race," but as of 5e, the only thing that might be called definitively "biological" about being a dwarf is that your CON might be 1 point higher than a human if you both max out CON. But why couldn't a "hardy group of humans" get that max?
Absolutely true. No human can use dragonbreath, nor are they innately born with dark vision.One of the more important things to consider, IMO, when discussing "race" in the context of D&D: are there things that the "races" of D&D (or any other game) can do that nobody outside that group can?
Why not? Because we use people in real life to refer to ethnic groups, just like race. So... yeah. Same issues apply.Why not use the word 'people', plural 'peoples', to denote those of a particular nation, community, or ethnic group. Tolkien did this when he spoke of the Peoples of Middle-earth.
Why not? Because we use people in real life to refer to ethnic groups, just like race. So... yeah. Same issues apply.
Every one of the OP's issues with the word race would apply to the word people as well. *shrugs* Its all basically a question of Political Correctness. Which I find to be odd, considering that PC terms are half the time more offensive than the term they replace.I thought the issue was the OP's distaste for the word "race". Is people just as distasteful?

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