I've always thought of it as a craft and process thing. MTM is good if all you want is a well fitting suit, just as finding a RTW cut that suits you and having a good alterations tailor is. There's a special feeling feeling though to something cut to your pattern, of going through the bespoke process with multiple fittings and discussions. The result may not be (and often isn't) perfect the way a high quality machine made garment can be, but that's rather the point. There's a charm to all of the imperfections that are the inevitable result of having people involved that needs to be appreciated.
When I was in college as Amazon took off I was the manager of a small bookstore, and I often compare it to paper books vs eReaders. There's a place for eReaders, they make it easy to carry around and store a library for example. That doesn't mean paper books went or are going to go away. In fact, I've seen a growth in 'special' books, leather bound and illustrated tomes of things that you might not expect (Raymond E. Feist for example). As people less and less need paper books, those who love them focus on the experience of them, emotional as much as physical.
When I was in college as Amazon took off I was the manager of a small bookstore, and I often compare it to paper books vs eReaders. There's a place for eReaders, they make it easy to carry around and store a library for example. That doesn't mean paper books went or are going to go away. In fact, I've seen a growth in 'special' books, leather bound and illustrated tomes of things that you might not expect (Raymond E. Feist for example). As people less and less need paper books, those who love them focus on the experience of them, emotional as much as physical.