I also do not always see the logic in many tasks. If it takes me just as long to file a paper and thumbs through files when I need it as it does to toss it on top of a pile in a desk drawer, then why bother with buying file folders and labelling them, etc? That is my idea of pragmaticism. Certain kinds of organizing take more energy than they save.
I have never been a proponent of the INFP-INTJ match.
I assure you, there is no fantasy nor romanticizing of INTJs and especially not Ni mentality. I do not find the typical INTJ personality attractive, the description of one is not close to my ideal, and an INTJ has never had a role in any of my fantasies.
It seems a fantasy of yours to be an INFP fantasy.