Should I or Should I not sell off my Canon 400D and 16 - 35 L Lens series??

It's laying in my dry cabinet for gawd knows how long.. and it's not being used at all.. or rather, I have not found a good opportunity for it.

Besides, I wanna upgrade! To a Nikon! But not now tho..

And camera prices (esp Canon) is dropping like shyt.

HOW HOW HOW!