A home user would be considered a home user, even if they used professional programs to encode videos,video editing, do 3D, or music, and so 2 cores might actaully be an advantage for some.
I mean, dont you hate slow down sometimes when your trying to run one program while your waiting for something to run, or install? A Second core would help for that. Thats just an example, but you know
If you need 2 CPUs, good. If you don't then you don't. It won't put you at a disadvantage if you do have 2 CPUs when you don't need it...it's just unnessesary.