I share the same dislike of commercial cured bacon. When I cured my own, I did purchase some 'pink salt' from a
local butcher, which is sodium nitrate, and used it in the curing. But I used a much lower amount than a commercial operation would, with great results. The meat still turned a nice deep red color, and was preserved well. But it didnt make me feel icky from all the 'preservatives' like commercial bacon. I cant remember the ratios I used now, but you can definitely use half or less the amount of sodium nitrate that recipies call for, and get an even better end products.
good luck!