Pros : - Fun - Tank Inferno with a very low budget (less than 1M for Act3) - Good DPS (About 400% of the damage stats per second when done right) - CC Immunity (aka Frozen/Jailer/Vortex/... immunity) since you can keep Wrath of the Berserker up for longer than its cooldown. - Run super fast = farm faster.
Cons : - Hard to get used to. - Hard/lower damage versus kiting mobs.
There's a few subjects I didn't talk about, but I'll cover them in Part 2. Remind me of things I may have forgotten in the comments.