Should Floyd Mayweather Jr. think about retiring for good?

This is true for all boxers. When they go into the ring, they have to be physically, emotionally, and mentally prepared or else they risk seriously getting injured (they risk seriously getting injured regardless, but much more so if they're not truly prepared). It's always better to call it a day a little bit early than it is a little bit late, true in all sports, particularly true in boxing. If they don't have that drive, or their body isn't what it used to be, then by all means, call it a day, enjoy your money and live the rest of your life. The only problem is, the competitive spirit that drives them to be the best can also lead to their downfall, and they continue to want to prove they're the best when their body isn't quite what it used to be. Anyway, all boxers, not just Floyd has to do what's best for them, and when they start losing focus on boxing is when they should seriously consider walking away.