I write fantasy most of the time, and sprinkle it with a bit of romance, or humor, or dark themes, or all three. Every now and then, I'll explore other genres, but even when I do, you can be sure fantasy will sneak itself in invariably. It'll be subtly, or blatantly.
If it helps, here's a list of my favorite authors in no particular order. I'm sure they've influenced me in one way or another:
-- Alexandre Dumas
-- Sir Arthur Conan Doyle
-- Edgar Rice Borroughs
-- David Eddings
-- Stephen King
-- Andrzej Sapkowsky
-- Patrick Rothfuss
-- JK Rowling