Some people want to focus on the perfect line, braking points, nailing the perfect time and not worrying about shifting. Nothing wrong with that and they will always be faster than me.
I get my satisfaction from all of those things and from managing the shifter as well. It may slow me down overall, but I really derive great pleasure from nailing a perfect heel and toe downshift and having more control over the car.
Neither approach is better than the other, they are just different and meet the different needs of different people.