I was reading through all this and wanted to add my commentary - My DH went to a state school for undergrad and MBA.  He had gotten out of the service and state schools were free due to a veteran grant.  Post MBA he ended up getting hired by McKinsey  - hired straight from a state school MBA program!!  He graduated with minimal debt and a fantastic job.   Yes, there were many McK coworkers that had graduated from top MBA schools but he found a large group that went to his state school for undergrad.
Didn't want this to get lost in moderation-delay-- it's a great point!
I think that Tom Petty says it best, really--
If you don't know* where you're going, any road will take you there.  
* I'd argue that probably nobody really does, either, life having this persistently random quality about it.
Of course, Jon is perceptive as ever.  In a completely random moment this morning I was pondering the fact that 
I could have chosen MUCH better if I were interested in Glory and showered with accolades and fame.  And then I started 
humming-- and laughing.