Because I love the platform. I’ve been a Mac user for decades. People harp on marketing making us foam at the mouth for these products, but I genuinely love them. I also hate some decisions, but the time to switch platforms is not today or in the foreseeable future.
Yes, Linux would let me do most of what I want to do. But I appreciate the design of indie Mac apps. They’re far beyond the polish of apps on Linux and Windows.