Get them while they're young because when they get older they generally think birding is hopelessly uncool.
I don't care if they do. This time of year, at the start of the hour, I show them a "bird of the day" anyway, as the birds arrive. Today's bird: Blue-gray Gnatcatcher. FOY all over the state this week.
After a while, they start to be amazed at just how many cool birds are really out there.