I want to speak up for one big benefit of stock investing that doesn’t get a lot of publicity. I think it’s fun! Yes, fun. And I don’t just mean that making a big killing on a hot stock is fun. I think the daily drama and the brain work and the blood, sweat and tears of researching, buying and selling stocks is totally engaging. (It may even be as immersive as playing World of Warcraft or diving into Grand Theft Auto, but I wouldn’t know from first-hand experience.) I know it’s a fact that the ranks of investors...