I assume Tyson cares more about his pride than whatever money could have been thrown his way, wanted to win, and a lot of people including me underestimated just how much his age mattered because we wanted him to win too.
But I'm not a boxing fan and don't follow the sport. Last night might have literally been the only full matches I've seen. It's certainly the case that no matter what I say I just don't know wtf I'm talking about. Haha
My area of expertise here is more along the lines of sharing Netflix streaming memes frozen on America's ass or pixelated Punch-Out.