I’ve been using a Mac for about 4.5 years, and although I quite liked macOS, the past year Apple has made some dire decisions with regard to 3D on macOS, mainly ceasing support for OpenGL and OpenCL in favor of their Metal library, as @J_the_Ninja already mentioned.
Recently I was really fed up with the situation when I discovered that the Blender developers had ceased support for OpenCL on macOS, because of several issues. That made me decide to sell my Mac and return to Windows, running on carefully assembled PC hardware.
I made the switch about 3 months ago, and apart from a few minor, typical Windows issues, I haven’t regretted the move at all. On the contrary, I’ve finally got my beloved CUDA back, running on an NVIDIA GPU. I can install Blender add-ons that haven’t been released for macOS, there’s much more choice in software, I can customize my working environment a lot better again, can change hardware components without having to buy an all-new machine. And so on.
In conclusion: if 3D work is your main occupation, don’t switch to Apple.