Interesting. A friend of mine swears by his. I guess it's what you're used to. Recently the best coffee I have brewed is with my Hario Dripper. Not "getting on" with my French Press or my Aeropress a the moment. Seem to have stumbled on a perfect grind setting on my Barista Encore that suits the HD. Been drinking "Anericano's" with a dash of whole milk recently instead of my usual Flat Whites.
I like the Hario dripper; it is a very forgiving method of coffee preparation which, nevertheless, allows for a considerable degree of control.
And, (unless it is high summer), I always preheat my mug, before I prepare the coffee.