I leveled Blacksmithing, mainly because I couldn't think of anything else. It was expensive, slow, and mostly useless. I'm not wearing a single piece of crafted gear and neither are any of my alts. The most use I ever got out of it was the shield spike, and to be honest you can just pay someone else to do that if you really need it. Some of the armor pieces were nice, but they were quickly made redundant.
Enchanting is more versatile, since you can turn a profit from unwanted greens and blues, and there are lots of useful enchants for tanking. Mining is a huge profit maker, since people pay out the butt for ore so they can powerlevel jewelcrafting/engineering/blacksmithing on their alts.
If money really isn't an issue, engineering is fun and the goggles are kickass.