People who own their own airport must live a charmed life. They spend their summers mowing grass, planning fly-ins, smiling at their brides and babies, selling fuel, and filling tee hangars. It sounds like fun, like being the king of a small island. But it also sounds like work. Which got me a-thinking. What kind of person owns his own airport? Why do they do it? Do they make a lot of money? Here’s what I found…