I like working with wood, but I am the first to admit that being in the IT industry doesn't give me the practice I need to nail with missing the nail and dinging the wood, drywall, my thumb, or whatever. I guess if I nailed for years and was a pro, a hammer would suffice. Nailing in awkward corners is much easier, too.
I guess like the Colt 45 (the pistol, not the beer), a nailer is the great equalizer.