Laptop or Desktop?

Silly as it may seem, I see this debate a lot as I scroll through the endless sites I love to visit. And that just makes me wonder here too... Do you have a preference? Why?
I actually really like laptops- it means I can write on the go right there on my usual writing program instead of trying to transcribe my messy handwriting later. Desktops do have better functionality for certain things, but... I still really love my laptop.