Why do sailors like buttons?

What is it with sailors and buttons. Old school naval jackets, even though very fetching, are awash with buttons. The good guys, the bad guys, even the indifferent guys all appear to appreciate an extra brass button or two. Notwithstanding the natural benefits of the alloy in the circumstances and environment, perhaps there are other forces at play? Perhaps they just look good. Even the bad guys and their inherent evil intent can have their good looking button day.