Remember back in KH1, when Sora, Riku and Mickey were the only Keyblade wielders? When the Keyblade chose you for the strength of your heart, instead of just being passed down from someone else?

 

In KH2, Roxas and Kairi got Keyblades. Okay, we'll Roxas is Sora's Nobody and Kairi has a pure heart, so I guess these make sense. Then Xion got a Keyblade. In BBS, things got out of control. Suddenly every single character seems to have a Keyblade (okay, I'm exaggerating, but still). And in DDD, Lea just comes begging for a Keyblade, and he gets one.

 

I really don't think that's how being a Keyblade wielder should work. I would much rather it if the Keyblade chose its wielders, the way it chose Sora. Keyblades are awesome, but I feel like having so many people with Keyblades just makes them much less special.

You guys are forgetting that there are thousands of worlds (each star in the sky is a unique world) and each one of those worlds have thousands of people, so I guess less than 20 people that can use the keyblade with all these persons in the universes still makes it really rare. And Sora don't have "a" keyblade, he has the only keyblade capable of lock/unlock the hearts of the worlds and one of the duo that can open or close the Door to the Darkness, it's like the second most powerful keyblade after the X-blade, so yeah it is still amazingly special to have a keyblade and 10 times more special to have the Kingdom Key