Arcane Missles: Are they worth it for PvP?

I personally don't think so, they do so little damage in PvP, especially compared to our hard hitting Arcane Blasts. On top of that to even make them somewhat worthwhile, you have to spend 4 points to increase the missle count and the speed, which could be used to get other talents
In PvE they have a purpose, I can see that, they are used not so much as a damage component but more so as a mana conservation effort to reset your stack, but in PvP, unless you are involved in a big, long fight, the chances of running out of mana are slim to none if you are well geared.
I don't know, I'm kind of torn, discuss.

AM are great for low HP runners

Yes but I rarely run into low HP runners, it's normally low HP after the first AB and by that time they don't have enough reaction time so the second one kills them lol
They are definitely not worth talenting for anymore.
Maybe not an 80, perhaps at 85 though.

AM are really symbolic of the spec though, Blizz will probly buff them up to speed or make them desirable to use.
Supposedly arcane PvE is fail @ 85 so there is a chance.
If your Arcane in PvP you shouldn't be casting a whole lot of spells cause most targets die in 2 to 3 hits. Better to use the stacks of AB cause after 2 stacks they hit pretty hard. I do Arcblast PoM Arcblast into a Ab if they are not dead after the second one. if they are cast slow on the next target and 'pew pew' double kill for you son