That's like, your opinion man. While I'm sure that's one perfectly valid approach, I find a lot of value in knowing where my money has gone beyond categories.
To make it more concrete, how much I spend at Amazon my Rewards Visa determines whether the 2% bump in rewards is worth the cost of Prime. (I know - most people find enough value in the videos or not thinking about shipping. But I find that I simply spend more at Amazon when I have Prime, so I avoid having it!)
To counter myself, my own software is probably too granular and I waste time on those little details of where I've spent money. I could stand to simplify a bit.