The other day the newspaper had an article about a new study that was done about how people make decisions. (I couldn't find it online though). For less complex decisions, people in the study made better decisions when they analyzed the decision as they made it. But for larger, complex decisions, the study found that people made better decisions if, after looking at all the factors, they went away from it and after a lapse of time followed their gut feelings.
The study authors said that because complex decisions involve so many factors, the conscious mind can't consider them all at once. So people tend to focus on one or two things that appeal to them more and ignore everything else if they try to make a complex decision solely on the basis of logical analysis. But the subconscious mind can sort through all the factors while we're doing other things. That's why the lapse of time after looking at everything helped people make better decisions.
When I think about my own life, I realize that my most important decisions were made by following my gut feelings. The biggest decision was when I decided to enter the convent. I didn't sit down and logically analyze all the pros and cons, but I felt in my heart that God was calling me and I wanted to respond. I imagine it's the same when people get married.
How does this study compare with your own experience?