I admit that I didn't read through all the posts that flamed the op to QQ and all that, so if this has already been mentioned, just smack me on the head and tell me to STFU noob.
Anyway, you have to remember that Hillsbrad is the closest FP that alliance players have in order to get into Alterak Mountain, Silverpine Forest, That zone where all the Undead people come from (sorry rarely go there unless I want to run SM). Also it's where higher level alliance need to go in order to travel to the Hinterlands, Western Plaguelands, and Eastern Plaguelands in order to get those FP's.
Don't forget all those lvl 60's who have since decided that mining wasn't providing an ample enough income, and have just switched to herbalism and need to grind up to skill 300, Hillsbrad provides a great place to grind up some of those lower level herbs.
Not to mention all those fishermen who want to pharm some oilies from the coast while killing off the naga for clams (for the occational pearl).
Oh, and don't forget to QQ nub (just kidding), and roll on a PVE server if you're tired of getting ganked.