Our Jag had his tail cropped at 3 days old and I am happy that it was done. I can't imagine him running around the house with that big nub with an extended whip.
As far as the ear cropping, (which by the way is not illegal in Ontario, Brittain) we had Jag's ears done because we simply like the regal look of a boxer with the ears erect. I believe it is our choice and if the dog's ears are done by a reputable Dr. there should be minimal if any pain.
We went to a Dr. about 1 1/2 hours from our home who is well known for his work. People come from far away as far as the USA to have their pets done by him. I think if you do your homework and look out for the best you can give your dog, it can be a positive experience for all.
Now, the constant taping and postings are a lot of work and you must be dedicated to this. Believe me you figure out all of the little tricks to help the tappings go better each time and it is so worth it when the ears start to stand on their own. I truly do love the natural ear look too but my preference is for the cropped look.
I used to tell my hubby, "never again, I will never have another cropped dog", (because of the work involved) but now that we know the method and have the experience it really isn't that bad at all.