Infectious agents such as bacteria and viruses are the most frequent causes of gastroenteritis in the US and worldwide. Infections cause diarrhea and other symptoms by causing inflammation of the gastrointestinal (GI) tissue.
Remember, your Traditional IRA is tax deferred, while your Roth IRA is tax free... So, assuming a income tax rate of 30%, you really end up with... $20,933.70 in your Roth IRA, but only $14,653.59 in your Traditional IRA. That's the difference between an IRA that's tax deferred and an IRA that's tax free.
By having a combination of Roth IRAs and deferred compensation, you can manage your tax situation more effectively. If you want less taxable income in a given year, you can withdraw more from a Roth IRA and less from deferred-compensation arrangements. If accelerating your taxable income makes sense, you can do the opposite.