The ears are done today for one and solely one purpose cosmetic. The tails well I guess for some breeds I could see a reason, but say for a dane who not too seldom get what is called "happy tail" when they slam it into everything and get it bloody and sometimes end up having to amputate a bit of it anyway (one of my females years ago had to have about 2 inches amputated after long and hard efforts to make it heal) they are NOT docked, other short haired breeds I can see the same situation where they would get happy tails.
But like I said in another post in almost all countries in Europe it is illegal today to both crop and dock, because it is concidered, unnecessary pain and done for cometics only. So if you go to Sweden for example you will see all the breeds like dobies, rotts, danes, schnauzers and god knows what with long ears and tails
And all my dogs agree with Bear, they are also very very happy they have their tails and ears lol...
Marit