I can't even fathom having $2billion. If I won $40million, I would take the lump sum and penalties that go with it. %50 penalty + 36% tax will still leave me with enough to give myself $5,000 on the 1st and 15th of each month for like 106 years...
More than enough to live comfortably on, and that's not taking into consideration what I'd be making in interest..
Just broke my personal record for number of consecutive days without dying!