We always instead played checkers, for real - always encouraging and teaching, but no patronizing wins for me - it was a long time until I could actually take a few games. Great memories, and he was gone too soon.
I did play some in HS & college, very much enjoyed some intense games, and still think it was good advice.
The Paul Morphy quote is spot on, save maybe for great champions like Garry Kasparov, who also went to to greater things. I suppose the same could be said about many pursuits where only a few get to truly earn a living, such as acting, music, sports - it becomes what you make of it but perhaps chess is a bit more extremely consuming?