I used to subscribe to the idea that cropping film images was cheating and made the image less “pure”. This was especially true when using the Hasselblad because its frame lines have those famous notches, so not only was I proving that I had planned the shot perfectly, but also that I had done it with a Hasselblad!
Worrying about showing the frame lines took a lot of the fun out of taking photos. These days I crop at will, without regard for the “purity of the shot”. It’s better this way.