So, it sounds like you're OK with aging, retired ex-champs cheapening the sport with these silly exhibitions against opponents who would not have even qualified as a sparring partner when they were in their prime.
To me, it just does the sport a disservice with these guys fighting nobodies and then airing these shams on PPV to boot. It's nothing more than a money grab and ego thing at this point in time.
There is no law that's says you have to stop working past a certain age. Or that you have to stop working past a certain level of wealth.
First of all, if someone is willing to pay Mayweather the ridiculous amount of money at this stage of his career that theyre paying him, that means that there still a market for him. So let the free market speak for itself. And don't try to deprive the consumer of a legal good/service.
Also, he's not cheapening the sports in anyway. No major sanctioning body has him in their rankings. No major network on this side of the pond is covering these exhibitions. He's not taking the spot of a deserving fighter(ranking), so what's the problem?
If a man is able and capable, why deprive or shame him of doing an honest work. YES, honest work, because no one is being forced to watch these exhibitions.