There is NOTHING wrong with cropping..... In film world, you just raise the enlarger head and project the image larger than the easel will allow you to print, then move the easel to get portion of the image you actually want to put down on paper.
I avoid including too much extraneous stuff when shooting but if I think the image will be improved by excluding something, or change my mind when I see the negs, I will happily crop. There is no need to be that rigid in thinking that all cropping need to be avoided.
For the same token, often times, aspect ratio of the frame doesn't match the aspect ratio of paper, so I inevitably end up cropping something. At other times, I print full frame and leave out the white space.