There's a lot of unique, very high quality software that only runs on macs:
For designers not on Figma: Sketch, OmniGraffle, Principle, xScope and a fully featured OS color picker and palette manager that works across all apps.
As a developer, I wouldn't want to miss: Paw, Alfred, iA Writer, Monodraw and Kaleidoscope.
A niche favorite that really has no analogues at all: Lumen video synthesizer
Only the design stuff is probably in the "worth getting a Mac for" category though.
For designers not on Figma: Sketch, OmniGraffle, Principle, xScope and a fully featured OS color picker and palette manager that works across all apps.
As a developer, I wouldn't want to miss: Paw, Alfred, iA Writer, Monodraw and Kaleidoscope.
A niche favorite that really has no analogues at all: Lumen video synthesizer
Only the design stuff is probably in the "worth getting a Mac for" category though.