I, too, an an unwilling member of the incontinent club. I am 16 mos. past robotic surgery, and am totally incontinent. Unlike you, I do not attempt to limit my intake of fluids. I live and play tennis and golf in the heat of SW Florida, and such fluid restriction would not be an advisable strategy. In fact, I consume large amount of fluids daily (mostly water - good; too many sugary sodas - not so healthy, but tasty).
Sporadically, I do keep a voiding diary. I beleive that it does have some limited value. However, what goes in must come out. Since I consume more fluids than many, my output will be much higher. When keeping the diary, I do not attempt to weigh my diapers or pads (I use belted undergarments, without the belt, as my pads, worn inside my diapers). But, on the days when I do wear my AFEX condom catheter, I do get precise output readings.
BTW, I do like your attitude of mentally minimizing our incontinence problem. I try to do the same by continually thinking of those who are in a worse position. It helps me to cope, and inspires me to search for a solution.
As I have said in prior posts, I currently am lokking for the "magic bullet" for my incontinence solution. The first clinical trials in the USA (Beaumont Hosp. in Royal Oak, MI. and Vanderbilt Univ. in Nashville, TN.) currently are in progress using autologous muscle-derived stem cells to cure or ease urinary incontinence. These clinical trials currently are for females only. When these clinical trials turn to the next phase (for post-prostatectomy males), I hope to enroll. I am crossing my fingers for late 2010 or early 2011.