To hopetogetfi.
After 20 yrs of employment with a company that offered (a) pension (defined benefit), (b) 401k (defined contribution), and (c) retireee health, I was recently notified that, due to a corporate re-structuring, I and a few thousand other folks are being spun off to a new, stand-alone company. The pension which I've been planning to [partially] retire on for all these years has now been vaporized (only a fraction of the projected value), and my retiree health coverage has been dropped completely (meaning that my remaining assets will now have to cover a larger chunk of retiree health care costs). So now, the bulk of my retirement is my 401k. Fortunately for us, we've lived without new cars, vacations, or a [sufficiently] big house, and we have no debts except for a mortgage and sleep pretty well at night; so, we've been able to put lot in the 401k. Obviously, we can now see the true wisdom of that.
When figuring your retirement assets, I would suggest that you ONLY include the value of the assets TODAY when you plan for the future; i.e., if you lost your job tomorrow, what pension would you receive and when. Same with social security (plus add a discount factor since they won't give you even what they're promising you as of today). Yes. This will be a pessimistic outlook, but it may be a very real outlook...and it may only get better the longer you work.