With any other feasible VP nominee, you can't seriously make the argument that a McCain presidency would have been bad for this country. Especially in light of what has gone on since the election.
I wasn't in love with Palin either. But I would have dealt with an incompetent VP, rather than an incompetent, crooked, left wing radical as P. Plus, as bad as Palin is-- Is Biden now Albert Einstein?
Lets see- An independent minded, experienced, patriotic centrist as president with a stupid and inexperienced VP. OR
A left wing lunatic with zero experience as president with an experienced and stupid VP.
Seems like a pretty obvious choice imo.