@irontoenail - They used to have tonsils out at the drop of a hat, just because they thought people didn't need them. Now they know tonsils do serve some purposes. They help to stop you from choking and might have some use in guarding against infections for example.
But they still remove them if they think it is necessary. Some people are really vulnerable to cysts or infections of the tonsils or lots of other lovely things.
In those cases, where it keeps happening, doctors will usually just take them out. It's actually cheaper and easier than treating the infection.
Kids have them out all the time and it is still the same process, with icecream and jello after the operation.