No, only newborns should use ear tubes, because their ear holes are bigger than people from the ages between 50-65 because by the ages between 50-65 it would be too small for the tube to be able to go in.
Alcohol is bad because 1. you have constant mood swings. They don't fully realize what is going on and their mood changes a lot; sometimes hurting the ones that love them. 2. It is a very expensive habit. Because of this habit some people have gone violent towards the people they love. And 3. some people because of the excess can die because their liver has too much alcohol and it is way too much for your liver to work with which means you either get a transplant- which is hard- or you die. There is a bigger chance of death which means you'll be leaving your loved ones alone and hurt.
It helps your body get used to the allergen better. It just depends on the allergy.
Their brains are not working right. They don't think logically and they do stupid things. They can get brain damage, they can hut themselves and/or others.