Needs? Probably only a .22LR, a .22 centerfire of some kind, my 6.5X55 for mid-sized stuff, and something like a .338 WM for the big stuff. Plus a .22LR pistol, a .357 revolver, a big revolver (.44, .454, etc.) and an auto of some kind - I like my P-14 .45. Oh yeah, a muzzleloader.
Now, what about wants? That's easy - as many as I can get my grubby little paws on without getting divorced!!!