From some of the posts in this string, I would say the discussion has gone pretty far off the rails. If I may, I would like to address the original question.
I selected the full-frame option, mostly because of the availability of lots of lenses designed to make best use of this format. There is little point in having an expensive wide-angle lens designed to produce a large image area, and then use only a fraction of that area. If you want the same angle of view in a smaller format, you need a lower FL lens, which will probably cost a lot more. This is why I never saw the point of the Leica M8.
At the other end, the suggestion that a smaller format gives long lenses a "longer reach" is just silly. If I want to use just the centre bit of my image, I'll crop it, thank you, in printing, not in the camera. A lens is a lens, and it will do whatever it can regardless of the sensor, digital or film, that you stick behind it. I prefer to get as much out of a lens as it was designed for.
Now, there are some very impressive lenses that were specifically designed for the smaller formats. My Nikon 18-200mm DX lens is a truly wonderful device. I wish I had the equivalent for full frame, but I probably couldn't carry it or afford it, or both. I have a Nikon D700, and one of the cool options you can select on that camera is an automatic switch between full frame and the DX (APS) format depending on the lens that is mounted. In that context, I don't know or care about FF vs APS.
Cheers,
Dez