The Nuclear Option

Given our impending climatological doom, many scientists, bureaucrats, pundits, and my father have been suggesting a nuclear energy renaissance in the United States. There are three main reasons I believe this option should stay permanently off the table:

1. It's too expensive. The Rocky Mountain Institute makes the financial non-viability of nuclear plainly clear. How non-viable are we talking here? Try twice the cost of wind.
2. The waste is geopolitically and environmentally toxic. I think we're all familiar the arguments and facts on this one. Why this alone doesn't rule nuclear out completely is testament to humanity's painfully myopic decision-making tree.
   
3. It's not renewable. If "energy independence" is as big a goal as everyone claims these days, we should be avoiding tying our fortunes to yet another non-renewable fuel source proven to destabilize the regions where it's found.
   

Why are we still even considering this?