Well
@Nod, Pete Waterman is selling the very first series III E-type for £150,000.
At the other end of the scale you can still pick up a Zenit B for peanuts.
Both were widely used in their day, and still work now (allegedly).
But other than enthusiasts who would use either of these on a regular basis.
Things change, new ideas come along. It's called progress. Remember the Luddites? They fought against change - and lost. It happens and the inexorable march towards new and better will contuinue forever.
And as for tasty food being fattening? The ever delectable Mrs. Nod would have a fit if she knew what was in our oven, filling the house with delectable aromas. I'm going to die happy!