There are situations when it can be a burden for someone to go back and get meds if they forget them. One example that springs to mind is Sky for people who have yet to complete CoP and the Crag-Tu'lia teleport quest.
In every case, perhaps with the exception where mobs are sound aggro only, it becomes extremely arduous for a mage to come and escort someone from the entrance of an area to camp. Particularly if this involves having to reapply sneak/invisible multiple times, and moreso if there aren't any places for the mage to stand long enough to reapply on both persons (and both is a loose term here, since it has happened that I've had to do it for more than 1 other person simultaneously). I have died on more than one occasion having to go back and escort, when I had already made it safely to camp prior to this. It isn't in any way reasonable to expect someone else to die, just to safely get you to camp.
The real "!" moment here is the fact that it seems the person in question was at the staging point area at the time of finding out they had forgotten their items. If you're being absolutely mercenary about it, I doubt it takes longer to warp through the portal and run to the auction house, than it would for a player to come back to escort someone, a course that requires them to sneak back themselves.
I've on occasion forgotten items to sneak/invisible myself, and in most cases I've felt like an idiot for doing it. Trying to excuse my way out of it for 200 ISP, and whining about it, in which time I could have gone and bought said items, while standing at the stage?
I am surprised any of this needs to be explained in any length. By the time you hit level 60 you should be well aware of all this, if not, then this probably isn't the game for you.
