As someone who has worked in this field, I can honestly say that I have trained a couple of morons that wanted to ask people who were very obviously of age. Even saw one deny a sale of cigarettes to someone who looked to be about 40. The las says that a person must look to be at least 27. I am 32, and still get asked for ID, but I take it as a compliment. At his age, he should never have been asked, except in a joking manner--which I have done to older people, just to make them smile!
Common sense has gone from this world!