I could tell you guys why crafting is good but... Then I'd end up pissing in my own pockets so to speak.
Let's say I've made a lot of gold with it.
Okay what the hell... Just craft them yellow items and put em on the AH. Most of the time even ones with crappy stats sell for at least 10k gold or so. Just keep crafting even if you dont need them. I've gotten a few really good ones that have sold for approx 100k gold each. (Made a level 45 something belt with LOTS of Int and Vit, some Crit-rating, Health-globe thing and resistances for example).
And all that gold I made I've used for buying myself some goodies from the AH.