At the moment i have my warlock specced Fire Destruction PVE like this, http://www.wowhead.com/?talent=IZdxczIbzZVx0tr0tVuV. I only do like Karazhan / Zul'Aman on it, but when i look at Tier6 Destruction Warlocks i see that all is Shadowbolt specced instead, and i kinda wanted to ask why?