I've encountered turducken twice in my life. The first time it was just okay (meat was dry, but stuffing was soggy), the second time it was pretty decent. I think it may partly depend on whether it's a fresh or frozen turducken. I wouldn't go out of my way to have it again, but I didn't think it was gross. (I don't like turkey, am lukewarm on chicken, but do love duck.) In both cases, everyone pretty much ate the meat or meats they liked, and left those they didn't on their plates. If you're okay with turkey or chicken, I think you can safely eat those and skip the duck if that's your preference. That's pretty much what everyone except me did!
Whatever you do, don't do what my friend did when she was gifted one--she thought you were supposed to disassemble the three birds before serving.
I believe in the forest, and in the meadow, and in the night in which the corn grows. -Henry David Thoreau