In the spirit of this question, now 4 years later, I'd like to know if there are any concerns with the future "security" of Roth accounts.
I'm currently maxing out mine and my spouse's Roth and contributing 14% to employer Roth 401(k). Given the recent (rejected) proposals by the president for RMDs and spousal disbursements, it made me wonder - what changes to the tax codes affecting Roths would make you reconsider future contributions over the next ~20 years?