I dont think its neccessory, for a DM I'm taking stamina at 30 with swift at 22 and health at 24, try it for a while without stamina, if you think you should need it still you could always respec ^^
Ok. I dont think ill get it as I let my pets do all the work 
Thanks.
I asked the same question a little while back when I wa also lvl 8. I am now lvl 22 and I can tell you, if you plan on taking shadow fall then you have to go stamina. If you plan on not taking shadow fall then you dont need stamina.
I took shadow fall at lvl 22 and was very greatful to Max and others who said I should have stamina.
@Boerewors
[ QUOTE ]
If you plan on not taking shadow fall then why the heck are you playing dark?
[/ QUOTE ] Edited for personal opinion 
Agreed on that one. Although it is a bit end heavy it's still a great team buff and can also help in PvP.
I have a level 8 MM and its about the time to choose whether i should get stamina.
I havent got any attack powers, and i dont think i want to get attack powers ill just let my zombies do it
But do i still need stamina if i dont have any attack powers?
I have /dark as my secondary