I must be the only one who doesn't "feel the need".
I got into trains because "I liked them" nobody pushed them on me or said it might be a good hobby to get into. Didn't have a train when I was a kid, got an HO set when I was 27 that was suppose to be for my newborn son, turned out to be a girl so....
Got 3 grandsons, they've seen the trains. The oldest (7) I don't see him often enough but he likes to watch them. The 3yr old wants to play with all the stuff on the layout but could care less about running trains. The almost 2yr old doesn't have a clue about them.
Kids are going to gyrate towards what catches their eye at the moment, if it happens to be trains great, if not, oh well.
***But someone's gonna have a lot of stuff to deal with when grandpa (for some reason they call me Bubba or BawBaw ) goes bye bye!!!***