Do you specialize at crafting or do it all?

I'm having the hardest time focusing on a tradeskill in Final Fantasy XIV. They're all enjoyable in their own way, and heck I even like gathering. I feel that I should specialize, though, because otherwise I'll spread myself too thin and ultimately run out of time for other FFXIV funsies and other games.

What about you, Massively crafters? Do you do it all in a particular game, or do you specialize in the stuff you need or the stuff that's most profitable?

TH