I just leveled up engineering a few days ago, spent a whopping 10k leveling it (using the AH). I loved engineering in wrath, the tinkers were so fucking awesome back then, not to mention the convenience the profession provided. However, after checking EJ I've noticed that engineering is no longer awesome sauce for DK DPS, replaced by fucking leatherworking for the number 1 slot.
I wondering if I should drop the profession, but I'm reluctant to let it go. So convince me to drop or keep engineering, I can go either way.