lonemantis
Well-known
I'd say it's because the OM-1 is the SLR version of everything the Leica M tries to accomplish. Compact, unobtrusive, reliable, dead simple to operate, and a great selection of lenses. It's got everything you need and absolutely nothing else you don't, and it strives to excel at the few simple things it does. (you just have to look through the massive viewfinder to see that!)
These qualities shared by the Leica M and the OM-1 are not what everyone is looking for in a camera. However, if they are, you really can't find anything better!
These qualities shared by the Leica M and the OM-1 are not what everyone is looking for in a camera. However, if they are, you really can't find anything better!