Mithril Dragons lost their purpose the day PvP worlds were released, DFH was 50M+ before and now is ~12M. Considering how rare they are from mirth dragons in the first place it was a very stupid thing for Jagex to put them as PvP drops and I honestly have no reason why they did it as it makes no sense, it's not as if people were pking with them. Hmm, I always thought the purpose of killing these npcs was for fun. Fun is all well and good, but it's nice to have a reward of some kind too. And things like Mith dragons aren't fun, they're repetitive and hard to kill (well, not hard, but killing only 15 a trip (more with unicorn) isn't exactly a lot), the only thing they had going for them was the chance of a DFH. I disagree. Mithril dragons are one of my favorite activities in the game, and as long as you're smart about it, you won't lose money. With the common rune battleaxes from them, you're almost sure to profit from these beasts. 15 kills per trip is to many, btw. Kill only enough that you fill up your inventory, and then leave. I've killed over 4k of them, the fun of them left a long time ago. The only thing that kept me back for more was the chance of a DFH, that's pretty much pointless to do now as they're worth so little.