Old cars have certain advantages. First of all, they are easier to repair. I can do almost nothing myself to my few years old Opel, because there are sensitive computers and electronics everywhere. Professional repairshops are absolutely necessary for these cars. But older cars have such simple technology that even complex repairs are possible without professional help, if you know what you are doing.
Another thing is the design and look of older cars. Most of them have more character and look more personal than new cars, which greatly resemble each other, because they are designed using completely similar wind tunnel tests and computer programs.
Of course modern cars have many advantages over the older designs, I don't deny that. But not everything new is better than old.