I have had my vet do three croppings so far. The first time i was nervous about it, but I did see first hand the vets work prior and many recommended him. They gave me the option to have pain meds sent home with her, and of course i got them. She came home and went CRAZY! Like nothing ever happened, of course she was on pain meds. After that day she never got them again. I personally do not give them the pain meds because with them they have no regard for their ears and that could cause problems such as scratching, poping stitches etc. Also I dont think pain meds would be good for a puppy if it isnt absolutely necessary. Stitches are only in for about a week anyways. Out of my three none of them seemed bothered. Its okay to be nervous, but I do agree if your vet is making you feel guilty that means they probably dont want to crop the ears and could result in a terrible crop.