I bother. I like history. Even if it is infused with fantastic elements like actual magic, or gods that actually exist and intervene. Fantasy needs to be grounded in some semblance of historic verisimilitude to have any appeal for me. And since—and this is a purely personal opinion of mine—I don't like magitech and steampunk, I prefer going back instead of forward in time. I just can't stand swashbuckling musketeers riding magic trains and wearing laced velvet shirts.
Something like Design Mechanism's "Mythic Britain/Logres", TLG's "Codex Nordica/Germania/Slavorum/Celtarum" or Mongoose's "Vikings of Legend" is right up my alley.