OK, I can see how it would make sense for a younger guy to use a Roth 401k.

What about an above 50 wide body Captain?

I know I would take a tax hit now, but is it worth it to contribute to a Roth 401k now so I can enjoy less taxes in retirement?

I have been using the back door Roth IRA method, but I am not sure if that will continue with the new tax law. Anyone know the answer to that one?