I attempt to remain objective, while mindful of my own subjectivity. What I do is dictated by a need to do something, and the utility of that something.

If I cut down a tree, I do so because i have determined that removal of the tree will do a minimum of harm, while providing me and possibly others with maximum benefit.

So to me, a preacher or a banker for example are immoral individuals, because they don't do anything that materially benefits others, and don't actually do anything but take up space and consume resources, with no concern over the effect their consumption might be having.