I'm curious why Enchanting allows you to enchant other's people's items (with a few exceptions). But with Engineering you can only add things like Flexweave underlays, Archano Springweave thingies, Accelerators, and Nitro boosts, only to your own items? And only you can use the bombs/decoys/etc that you make. Why is engineerings such a selfish profession?
I guess a similar comparison could be made with Inscription, and JC's. Most of their items are sellable, but not with Engineering's tinkers?
What's the deal with this? Why?