I’m not saying the expertise doesn’t exist. The point is that so much of our personal information is given up because of how technology is ingrained in our every day lives, so every move you make is recorded somewhere. If the general population doesn’t have that kind of access to technology, then you can’t record their every movement.
If I had to choose only one, it would be a desktop. The experience of using a machine with a good keyboard/mouse and large monitors can’t be beat, plus it’s much cheaper for the same quality of hardware. The main downside is that it’s not portable. Whether I’m working or gaming, I’m confined to that one desk. I can’t work on the couch, in the park, in the waiting room at the doctor’s office, or anywhere else I might find myself that day.
The ideal setup is to have both. A desktop for when I can be at my desk, and a cheap laptop that I can use to remote into said desktop. That way, you get the convenience of a laptop with the power of a desktop at a much more reasonable price.