Post and beam barn? Why not?

I'm having grand visions of constructing a huge post and beam structure now that I will have a way to cut large timbers for cheap.  I'd like a huge gambrel roof barn, but I think I'll have to settle for something a bit smaller and simpler.  I've ordered some books on post and beam construction and I'm hoping they come in today!  You know that it has been said that the first 40 years of childhood are the toughest...