Replying to Question about external flash on d-slr

Hey so I have a D100 which I absolutely love, and when I bought it, it came with a nikon sb-28 speedlight.
Now I would say I know a fair share about photography, and I mainly take art shots. But my question is, should I keep my speed light or sell it? I have had it for a year or so, and I just find that I never want to carry it with me or use it. I dont really like flash at night or low light situations and I am never doing portraits, so I dont think I have any use for it. Any suggestions, even on what I COULD be using it for? Or should I sell? Thanks!