We agree. However, I put the odds as better than 50/50 that he will join with the dems either directly or indirectly after he loses. If he were promised the right cabinet selections, I can even see him taking the VP slot on an almost unbeatable "unity" ticket.
..but you would rather have a second President Clinton than John McCain?
The question is simply which one would do the most damage. McCain would destroy the Republican Party, leaving no viable opposition to the dems. Hence I see McCain doing significantly more long term damage than even Hillary would do.
Two things I'm pretty sure even McCain wouldn't try to do:
1) Ram socialized medicine down our throats.
2) Appoint three (and possibly as many as five) Ruth Bader Ginsberg clones to the SCOTUS.