- It drains resources from the Dems as they fight each other instead of fighting McCain.
- It delays the time when the Dems start raising money against McCain
- It allows more Dem on Dem in-fighting, which gives McCain the ammo he will need come General Election time to just say, "don't take it from me, Obama/Clinton already said it back in April about Clinton/Obama"
- It lets McCain lie low, recuperate, rest, and strategize. If he's off stage for 2 months...good. It's like having time off before the playoffs to rest your starters (though the Giants proved that may not matter!)
Add in all of the turmoil re: Michigan, Florida, and SuperDelegates and you may end up with Dem fatigue, which may open the hearts/minds of Independents to McCain.
My buddy, Tjada, argues that the fight will "toughen Obama up" and that may be true, but it may also wear him out.
And here's an interesting piece from Victor Davis Hanson on Obama as a liberal pessimist.