Well honestly i think the only reason tank's still fighting is
A- keep himself out of trouble
B- He needs the money because i doubt he's made that much money in the past fights he's won.
So..ya thats my logic
Shamrock just wants to win a big fight and retire, thats my opinion on him.
What is it that is going to be on your mind when you're on your death bed? Will it be the tedious years of 9 to 5, or the memory of some great acheivement. Maybe a moment you stood in glory to the applause of millions.