My car has led a pretty sheltered life. She gets regular leather conditioning treatments, and usually has seat covers on to prevent color transfer of jeans to the cream colored seats. That combination has helped the interior stay looking almost like new.
Its really a treat to sit in the car. Almost everything in the old cars was covered in leather, and since its rarely been driven with the top off, the car smells just like it did the first time we sat in it at the dealership more than 20 years ago.
I'm looking forward to the upcoming cars shows.