Just a reminder, please don't answer the terrible and lazy. We have a wealth of information on haste versus mastery that they could easily read about. Thanks.
Originally Posted by Belgicanofl
Can anyone tell me why exactly you should go for high mastery when high haste just feels better when playing it?
Theorycrafting shows that mastery is more dps for BM and SV than haste. It should also be more dps in actual play as the more haste you add, the more demands are layed on you to not waste a single millisecond. The big difference between haste and mastery, is that mastery gives you a pssive damage boost, while haste requires you to be active and have good reactiontime to reap the theoretical benefits (and being human rather than machine, you will never reap 100% of the benefits of haste).