In the Bible, we see people do what they think they should without considering God’s take on the issue. So many do as they see fit, what they “feel” is right.
We see God in the Scripture seeking to draw us away from the error of simply doing as we see fit. It’s easy to become casual about God and not take Him seriously. All the time there is the pull to simply do as we see fit. Our culture would have the effect of diluting our faith if we become passive about what we believe.