I went from a 2001-vintage MTB to a 2018-vintage MTB. In the process gained new geometry, hydraulic disk brakes, 27.5+ tubeless tires, and 1x drivetrain.
It didn't make me any faster, in fact Bike Forums enjoys virulent arguments about how any of it is "better," but it sure is a lot more enjoyable.
__________________
Genesis 49:16-17
"Well, well!" said Holmes, impatiently. "A good cyclist does not need a high road. The moor is intersected with paths and the moon is at the full."