Quote Originally Posted by MistakeNot View Post
It is certainly not required, but many people end up leveling all the crafting/gathering classes anyway. Main reason for that is that so many recipes require materials crafted/gathered by some other class.
Sure, you can try buying those from the MB, but that tends to become expensive - and sometimes the items you need are not even available for purchase.
My thought is if you need to buy half the mats anyway, you may as well just buy the finished item as it is.