401k is a horrible idea, and its a good way to funnel money from savers. After 2000 & 2008, do you really want to trust the same people who needed bailed out? Yet, 401k is using those institutions to do business with.
401k is a wolf in sheeps clothing. The next down turn, who knows, governments have been known to seize retirement funds. What happens if US Congress decides to do that to save the nation? Look whats happening in the world, it has already happened in the last year in other nations.
My advice, stay out of 401k, put your money where it has intrinsic value, and not a number on a computer screen.