You think he's worse than Bush? Reagan was super charismatic and lead in a time of peace and prosperity recovered from the miserable failure that is Carter while Bush started two of the longest wars in American history and increased paranoia.
His two-term presidency, embrace of the religious right, and post-presidential hagiography allowed for Bush the Second to happen. GWB was incompetent and his advisers bloodthirsty lunatics, but most of them were around when Reagan was in office.
And Carter was a crap president, but considering the incredible string of bad luck he had...
And anyway, the guy who fixed the economy was appointed by Carter. Reagan deserves no credit for keeping him.