You can roll funds into a Roth and pay the tax now. If you can afford the hellacious tax bill, you can create a giant pile of money to invest tax-free.

My Roth account is up over 10 percent since Jan 1st this year and went gangbusters last. If I can manage another 12-18 years above the sod, I can put a lot of money in my pocket and none in Uncle Sam's.