Why are conservatives wasting their time with Herman Cain?

No one has won the Presidency since Eisenhower without any political experience.  Many of my conservative friends keep telling me that Cain's business experience replaces political experience.  Then some say Obama did not have much political experience but he served in both the Illinois legislature and the Senate.  Jesse Jackson and Pat Robertson are examples of people who have run for the Presidency with no political experience and lost.  Ross Perot, with all his money could not win.  If Conservatives want a symbolic vote then by all means vote for Cain but if you want to win you better find a candidate who has a record to run on.