Laptops:
Pros:
Portability (well depends...)
Negative:
Don't tend to be as powerful,
Harder to upgrade,
more expensive for same tech in a PC
I say a Desktop PC is better, unless you are a student that needs to move around a lot. In which case, (you wouldn't be gaming anyway really), a cheap laptop is nice to have.
But I do feel for creative people, portability is a must. I find I get different inspirations depending on which room I'm in.
Music for example. I can create better music on the piano downstairs, than I can on the keyboard in my room