There are plenty of good conservatives who would do a much better job. Phil Grahm, Tom DeLay, Ron Paul, Dick Armey, and Bob Barr are just a few that jump to mind.Good people, all, but none are "presidentially-electable" IMO. Unfortunately for all of us, the election of a president has been turned into a trip to the Mad Hatter's table, a maniacal game of gotcha, a lunch of lunatics, but I suppose that's what makes Polly Tick.
If you really think you can win for conservatism by joining the bash, I can't stop you, but it seems we will have a repeat of 1992's Perot-Gets-Clinton-Elected fiasco as a result. I imagine you'll all be content with that, right?
It's better to have a defeat than to let the party keep sliding left. Goldwater's defeat set the stage for Reagan's win. We just didn't purge enough of the RINOs at that time.
Republicans have to learn that they can't govern like Democrats and get reelected. If it takes another failed Bush presidency to do that, it is a small price to pay. At some point we have to have a conservative party to fight the national socialists or the republic is lost.
Now is as good a time to make a stand as any. The bigger government gets the harder the fix will be.