Createspace Blessing or Curse?

I am currently learning about Print On Demand with Createspace. I just spent two hours learning about margins and how much I didn't know. I finally figured out about "gutter margins" and "bleeding" so much I feel like I am actually bleeding in a gutter. Anyway, in a couple of days I should have an actual hold in your hands, get a paper cut from, physical copy of by book. Worth every frustrating formatting issue.