Upload & Sell: Off
There's an illustration for at least half the reason I went from a DX body to FX. Not just how it changes this particular lens, but the performance of all my wide angle lenses. DX is handicapped at the wide end and you need (expensive) custom DX glass like the crazy 8-16mm Sigma to get something wide onto that tiny sensor. I didn't buy my 14mm Rokinon until after I got the D600, because on DX that massive lens is 'just" a 21mm, less than my comparably tiny 20mm f/3.5 Nikkor.
The reverse is true for me. Every time I have tried to talk myself into saving for a FF, I end up talking myself out of it. I like the Dx a lot because I can get away with not as pristine glass. I only use the central part of the lens and that is mostly where the sharpest images come from. Also, I like that I don't have to shell out as much for reach. Would I turn a FF down if the opportunity presented itself and I had the funds for one, probably not, but something to save for...not in the cards for me. I would like the sensor in the D7100, but for now, I am good with a Dx and my D7000.
I had an epiphany last night. I shoot more than pictures and was thinking about some of the pistol holsters I have seen people wear. Also, the department I work in includes the fashion department (sewing, etc.). Once upon a time I tried on my grandfathers shoulder harness holster. It was designed to carry two .45 Colts as well as 4 additional magazines. It fit so well that all the weight was felt on my legs, not my neck/back/waist. I am going to meet with the department chair for fashion and see if it (a new camera strap) could be a special project for an advanced student.