D&D 4th Edition: Is It Worth Buying all New Dungeons and Dragons Books?

I'm going to be honest here. I haven't really done that much research into the new 4th edition of Dungeons and Dragons. Personally I thought that the leap to 3rd edition was awesome, despite the slap in the face of converting characters from 2nd edition to 3rd. OF course those characters are long gone. They didn't last too long in 3.0. My first thought about 4.0 was that it was just a