What appeals to you about the Young/Oldtimer or restoration?

Hello, wanted to ask you something about the Young or Oldtimer in general? Ask the question consciously, since I prepare a small work with presentation for the school about the economic efficiency of a (part) restoration of Young or Oldtimer. Unfortunately I do not own a Oldtimer yet, have a 89er Jetta 2 which will be 25 in 3 months and thus finally belong to the Youngtimer. But I ask myself the question, is the restoration or that again make of such a Youngtimer imer/oldtimer economically worthwhile? I also want to include what the new purchase, the maintenance and the subsequent costs of a newer car would entail. So already compared to old against “new” used cars of newer year of construction. Does and drive you a oldtimer because you have fun at the car or because it is better economically? Would I be happy about a few answers from you! P.S. is a small oldtimer fan myself