Personal preference
As it has clearly already been stated, it is a preference. Does it hurt ? Yes it does, two stitches or forty two, it hurts, the ears are cut. There are different kinds of cuts, show cuts, pet cuts, and, wrong cuts all together. The color of the dog is also an issue when talking of the posting of the ears and how long they will take to stand. White Boxers have an easier time with it I understand, I don't believe this should be done, Roxie came to us with her ears cropped already (wht 12yrs) Maya is a retired show dog and was 4yrs when we adopted her. Hers is a longer, more tapered cut, Dylan my brindle male took 10 months for his ears to stand and it was constant taping and I personallly would not do it again, thats just me. They say the reverse brindles can take longer, thats what he was.
They are beautiful either way, and it is a preference, but I do believe it is painful. I believe our experiences and situations are all entirely different also. This is just my opinion and what I think. Best of luck