Believe it or not I actually don't mind modern boxers fighting less. Ok, fighting once a year isn't great, but if they only fight 2-3 times a year at championship level, that's fine by me. Two reasons why:

1) Imagine having to pay out PPV to watch your favourite boxer 6 or 7 times a year!

2) More importantly is the safety factor. Less and less I notice fighters with symptoms of Dementia Pugilistica when they retire, which is a good thing. Fighters from back in the day often exhibited signs of Dementia Pugilistica when they quit. Boxing is still a dangerous sport, but anything that can be done to reduce the risk in boxing is a good thing. If it means I only get to see my favourite boxer 2/3 times a year, so be it.
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"Let your food be your medicine, and your medicine be your food" Hippocrates.