Ask HN: Laptop or Desktop?

What portion of you all use a laptop versus a desktop and why? Ever since I got a laptop I've had recurring neck pain and issues from not being strict with desk setups and using laptops here and there instead of at a table. There is no good way to use a laptop without a stand and external peripherals. It makes sense for students and traveling professionals but not really for most people I think. Thinking I will go back to a full desktop now. Bonus: Mac or PC or GNU/Linux or BSD.