My wife always complains that I tend to break out a spreadsheet when I am making a big decision. I feel like it helps me visualize everything a bit more easily. Even then though, it doesn't mean I am making the best decision. I am just making a decision based on the variables I have chosen to evaluate.
It is a better process than most go through, as most "use their gut" as if their gut has some magical power.
All my gut has is fat!