Laptop is not set for heavy workloads, so I also prefer working on desktop where I can multitask easily. It is also an advantage of adding up hardware to a desktop to increase your computer profile as compared to a laptop.
I like Desktop more: it's better for movies, web browsing, writing and surely games. Overall, it's either Desktop or a smartphone for me. However, I use my laptop at home because I don't have a fixed working spot.