Can someone please explain to me why this is apparently so bothersome to some of the people who post on these forums? Is it just an OCD "I want a neat list, dammit!" thing, or is there some other issue?
Personally, I've got no problem with it. I'm walking down the street, overhear two NPCs in the corner talking about something odd happening at the mine down the road, and a notation "Check the mine west of Bobville" is thrown in my journal. Cool! A reminder of some task I might be interested in doing. Nice of them to throw that in there. I may or may not ever get to it. No big deal....

I certainly also don't have any issues with NOT doing a task I discover is objectionable.... like the guy in Solitude who you hear has a job. You ask what the job is, he says "Sabotage the lighthouse so the cargo ships crash!" Um, no. Sorry dude. But in case I ever change my mind, that note is still in my journal. Excellent! Good way to keep track of various optional tasks you might or might not want to optionally do. Certainly nothing there FORCING me to do anything.
(Yes, I'll admit that they could have included a "delete entry" function. I imagine they didn't because 1. it didn't occur to them that anyone might have such an issue with it, and 2. they certainly would have anticipated a flood of "Oh crap! I deleted some quest entries for Major Quest Chains! I've broken my game! Help!" That's a heck of a good reason to NOT include a delete option.)

