As Dave says, "Different strokes ..." People with an affinity for numbers and quantitative analysis will use diabetes data management tools. The real question is: Does using data management tools help improve results? I strongly believe they do.
There's truth in the saying, "You can't see the forest for the trees." We all have lives to live outside of managing our diabetes. This attention to other things, often the things that bring great satisfaction and meaning to us, distracts us from our diabetes management.
Looking at your blood glucose numbers in the here and now has limited usefulness. What people often fail to see is the pattern that emerges when you look at a series of days worth of data - especially when the data is represented in a graphic format like charts. The human brain loves and understands pictures.
I just started on a continuous blood glucose monitor on September 4. Since I have been watching my numbers using the data mangement program that came with my monitor I have dramtically lowered my average blood glucose - from 170 down to 136. In addition I have made corrections to my pump's basal rate that I would have been hard to make without the perspective afforded by the data management charts and graphs.
That being said, I understand that some people don't like looking at data. Some people also resisted testing their own blood glucose numbers when the home BG monitors starting coming out in the mid 1980s.
Blood glucose data management software is another tool available to diabetics. In general (there are exceptions!), those who choose to use it will probably get better results than those who do not. There are many tools a diabetic could use and I understand there many paths to good control. I like the data management software and condier my CGM system incomplete without it.