Why did I rob banks? Because I enjoyed it. I loved it. I was more alive when I was inside a bank, robbing it, than at any other time in my life. I enjoyed everything about it so much that one or two weeks later I'd be out looking for the next job. But to me the money was the chips, that's all."
"Go where the money is...and go there often."
http://en.wikipedia.org/wiki/Willie_Sutton
Yeah, I think it'd be well nigh impossible to keep ripping through people's souls and saving accounts so thoroughly, and in some cases viciously, without there being some pathological need to do so that was above and beyond the chips. I guess that is why some people call him a megalomaniac.
Remains to be seen re. the subsequent generations, but I rather think they do not share his passion so obsessively. I rather think they like the chips, first and foremost.