Ok this farce has gone on long enough! Is playing a warrior fun yet? (don't hate on me, I know some people love it, haha)
No, not anymore. Warriors used to have an edge over Knights when tanking Raid Bosses, it's barely the case anymore. You could do current raids with 0 warrior and only knights and you would be fine.
Yes. With the right ADPS / healing you feel great. The layering of defensive abilities is technically interesting and predicting what abilities you need to save adds depth to the class.