Druids sucks

[Zzoltan]

So i haven't played in a few months and i came back to lvl my druid in WW and i was wondering if there was a major nerf or something because why don't root and snare stack? why don't creeping crud and stinging swarm stack? why do dots do more damage when mobs are rooted? why are db mobs resisting 5 nukes in a row sometimes? and why do giants run at sow speed? this all seems a little weird and not how it should be someone plz help b4 i delete!