I basically decided on a whim (from reading this site, talking to some friends, and always admiring great photos) that I want to get into photography.

Are there disadvantages to starting out with a prosumer camera like the Nikon D7000? I know stuff will be more expensive, but will there also be greater frustration or complexity?

(I am the kind of person who tries to find reasons to justify the extra cost even when I know deep down that it's not necessary...)