I guess I am lucky. All four of my sons play around on machines and stuff. They like the farming bit as well. They realize that they are not going to be able to make a living by just farming. The youngest is the least interested in tractors but he is a speed freak right now. So it is 4 wheelers and motorcycles for the moment. The others where kind of that way when they where younger but now they play with the old iron as well.
They are not into the real old stuff. They like the 1960 and 1970 tractors. My taste has changed over the years as well. I only have 3 JD two cylinders anymore. I would not have them but they are family owned so that means a lot to me. Give me a good foot clutch and power steering any day. LOL