Bob, don't feel bad, you are not alone.....
I have two sons, who are great family men, and have always been wonderful to me and my wife, when she was living.
When they were growing up, they went to car shows, flea markets, car club picnics, were introduced to models, automobile literature, and collectibles. Hundreds of hardbound auto history books, and me talking cars each and every day. I even have a small museum of memorabilia,
No interest at all, other than present day cars, that they use for transportation. Just not interested in old cars. I got over it long ago. Even my one grandson is just mildly interested in cars. No one but me. Thank God for my friends.
Trouble is, none live close by, so we have to burn up the phone lines.