I can understand the implications of this question, because when I first started out as a professional photographer, I wouldn't have chosen an entry-level camera (back then it was probably the 300D) as my backup either. If the 1D was my main camera, then the backup would at least be a 10D, 20D, and later on, a 30D. You might be wondering, why have I now ended up using an entry-level DSLR?