Then move onto Blackwing Lair, where you were given the option of a big bent dragon neck or a giant orange dragon cannon. They were great attempts at creativity, but they fell short compared to most of the other weapons in that raid.
I'm not even going to mention the shit that dropped in AQ. That entire place was just awful...
For me, Burning Crusade was one of the first times that ranged weapons started getting really cool. Karazhan had the giant orange bow from the last boss, and Vashj dropped the Bristleblitz Striker. They were bows, and they were unique looking, but not corny or overdone.
In Burning Crusade, Black Temple and Sunwell were the end-game raids. As such, the weapons from those raids were highly coveted. Maybe Black Bow and Golden Bow aren't the MOST visually appealing bows in the game right now, but I think they easily do the best job of keeping their form as a bow and having stunning visuals without going so overboard as to be completely ridiculous (check out the crossbow from Throne of Thunder).
On top of that, I (and many others) feel BC was kind of the height of WoW raiding. Since the end of BC, the game started down the path of homogenization and nerfed content for casual players, and every other facet of watering down that you can imagine. For me, BC is my 'rose colored glasses' time, so all the weapons from there have a very special place in my nerd heart.
You don't have to agree with everyone else's choices, nor do you have to like them, but there's just understand that there's likely a lot more to it than you immediately realize.
On top of all that, Black Bow happens to match my set of choice perfectly. I'd gladly use something else if it fit better, but I have yet to find one: