Ken Shamrock - Why does he do it?

For those of you that did not see Ken Shamrock fight at Impact FC 2 this past week, don't watch it.  Ken Shamrock was only there in name, nothing else.  He certainly doesn't fight like the Ken Shamrock everyone wants to remember, he doesnt have the draw, the heart, but he sure does have the honesty.  In the post fight interview, Ken Shamrock said "As long as the fans keep coming, I'll keep getting beat up".  Everyone knows Ken is flat broke, and can't find much other work to promote his name, but why this?  Is it pride, determination to still see fans admire his legacy?