Pretty similar to a lot of people, im a compulsive reloader any time im not shooting something I have to reload, and pretty much after every kill I have to reload.
I must explore everywhere which is a little annoying in dungeons with multiple paths and I have to backtrack to see if that dead end actually led somewhere, I always hope to pick the path that has a dead end rather than continuing down the main path.
In skyrim I have a large variety of potions and I have never used a single one but I wont sell them cause maybe I will use them... maybe. Im also very organised, I spend quite a while organising inventory and making sure my house has specific chests and drawers for specific things. I dont think I hoard too much cause I tend to sell all the valuable stuff. I also tend to keep named items too cause there is only one and I cant get it back... even though I will never use it xD
In Final Fantasy games I suffer very badly from the too good to use trope, I always tell myself that I will use it in a bad situation but I never do, there might be something worse later, so I walked around with 99 of each type of potion and the various status curing antidotes, eye drops etc. Although I did always like my part to be at full health after every battle.
One of the worst things I did was in my first playthrough of Half Life 2 I saved rocket launcher, grenades, combine rifle, revolver and crossbow ammo, unless there was an infinite cache nearby I never used them, pretty much sub machine gun, shotgun and gravity gun the entire way, then I lost all my weapons at the citadel after never even getting any use from half of them xD