Mine are set at about 2.5 pounds. I hunt on hillsides frequently and it is very common to slip down on either leaves or gravel and I do not want to worry about the gun going off.
Secondly, I do not have what a person would call "sensitive" fingers and I want to know that my finger is actually in contact with the trigger before it goes off.
Growing up shooting factory guns and then in the army using guns with a lot of slack in them, I am happy and comfortable with slack as long as it is smooth slack.