The legal bits of it, anyway.
James and I saw an attorney, and it was really quite astonishingly painless. He suggested that we didn't even need any of the really complicated bits--all of our main issues could be much more cheaply and easily resolved by just refinancing the house and transferring a credit card balance before we file, saving a lot of cash and paperwork for everybody.
Being inundated with tales of divorce horror, frothing ex-spouses, cataclysmic legal fees and all the rest, this has very easy and very painless by all accounts. No kids, no pensions, and generally mellow outlooks help.
Which is nice. The emotional bits are hard enough, without piling all kinda legal crap on top of it.