Funny! It sure is nice to sleep through the night without rolling over and thinking, "I should go out and make sure the fire is OK." Some people aren't built that way and sleep just fine without worrying, but for those of us who aren't a temperature controller is nice thing to have.
Other than that, short of the fire completely going out or cooking on a tight schedule, I can also completely understand why many people don't feel the need for a guru - the meat will be done when it is done and for the most part the results are going to be just the same.
There are also competition folks who feel that controlling the fire is part of the skill. I get that, but unless/until a particular competition bans everyone from using them, I think you are handicapping yourself if you aren't. You may know your cookers and manage your fires just fine, but you still run a risk of a fire problem and that could hurt you (I've seen it happen). Meanwhile the 10 teams down the row are dialing in the temperatures on their cookers, focusing their attention elsewhere and virtually eliminating temperature control as a potential problem. I am not saying that is right or wrong, but it seems to be the way things are these days.
Of course I realize I am not the first person to think or say these things, I am just mentioning them as a counterpoint to some of the other comments.