Originally Posted by
Nairobi
I had a really hard time giving up the Mastery/Stam paradigm at the start of MOP to go with haste. I felt like I was getting my teeth kicked in, and I likely was, as the whole idea of AM was still new-ish. I had actually benched the pal for my DK at the start of the 5.0 patch, but quickly gave that up (luckily), and had some re-learning to do.
That said, it's one of those things that I now look back at and wonder how we ever played without it. I mean, look at what you're gaining:
[Warning: Bad Napkin Math below}
Let's call that ~3000 haste you're picking up a flat 7%, for ease of argument. That means that you're essentially picking up 7% more melee attacks, ergo 7% more SOI procs. Your SS is also ticking 7% faster, meaning that you have 7% less time between shields. Your HPG abilities are coming available 7% faster, meaning you get 7% more ShotR casts, ergo 7% more uptime. This is further increased by DP (if you take it), to ~9% more uptime. All this also means 7%+ more DPS from you.
All that, for 30k HP.
So, thinking of it in terms like that, should make it at least a bit easier to make the switch.