Just because something CAN be dealt with, doesn't mean it should remain unchanged.
I CAN deal with a boss at work that cusses me out all day long, but that doesn't mean I should have to.
Walking around a corner in a tight corridor to be set on fire and lose half of your scrolls is not fun, or adding in any way to the experience of the game. It is unavoidable, and stupid.
I'm not saying remove it, i'm just saying rework it slightly so SOMETHING can be done about it. at the moment there is only one way to deal with it, once its happened - and that is rare to spawn. This needs to be changed IMO, but obviously nobody agrees with me.
The next time you play, I hope you walk around a corner and get set on fire by a lone mottled something and lose your scrolls so you feel my pain!
If I had any opportunity to deal with it, i'd agree with you. But I didnt, and often don't. Making someone read teleportation, quaff speed and run away from an otherwise easy pack of monsters just to save some scrolls is not a fun mechanic. It doesn't need removal, it needs to have some way to deal with it thats not an amulet of conservation. I still like my idea of waiting in place while on fire stopping the item destruction.
Imagine if there was no potion of cure mutation and everyone said "just kill mutation capable monsters from out of LOS"...
But as mentioned, everyone is so divided on this, I'll just deal with it