Because if you put live action on a CARTOON network, I have one word for you: ironey.

Dude, if you get rid of all of live action, I'll be happy.

Now, it's these cartoons that are on now that saved Cartoon Network going as crappy as disney channel:

Total Drama Island(dispite the fact that it aired in my country first- c'ya. XD)
Chowder
The marvious misadventures of Flapjack
Camp Lazo
Foster's home for imaginary friends
Ben Ten
the anime that they aired that I took intrest in (Bleach and Death Note for example)
Johnny Test(it may be a medorke cartoon- but it's a GOOD medorke cartoon)
Stork Hawks(only saw like, at least 3 episodes)
Transformers: animated
Robot Boy
Codename: Kids Next Door
Class of 3000
Grim adventures of billy and mandy
The Batman(I prefer B:TAS, but I love this too. Only complaint is poison Ivy's hairstyle)
90's cartoons (favorite era for cartoons- bias a little)

So, I have nonthing against cartoon Network(yet). As for the 'crappy' cartoons, they played out decent to me, not even half bad. and EVERYTHING has its bad crap in it.

So, if you want a whole anti new CN in general go here: [link]

This is more anti live action on CN than new CN anyway

(note: I'm not saying the live action has bad writing. It's just; it's a Cartoon Network. Unless it showed Roger Rabbit or the movie adaption of Speed Racer, it ain't going to fit Cartoon Network's nature.)