He'd broken too many things, over the years, that couldn't be repaired. Oh, if Crowley wasn't around, he could fix them with a quick miracle, but anything that Crowley saw broken had to stay broken, or raise too many questions. Aziraphale wasn't exactly clumsy but he'd never had to be particularly careful before, had always been able to restore anything he damaged. And somehow it was always the things he loved best that he managed to destroy.