To correct my post, it's none of my business and I have no access to know so I have no idea what the other employees have, just what they say they have??? But I do have access to know that they are well diversified and ranging between in the negative to +4.8% tops right now compared to my 13.1%.
Every 401K specialist to sit in front of me has rolled eyes to go on to the next person.

I'm a gambling man, what can I say?
But wait... I am diversified. I have a rental house, equipment, a shop with tools and know-how, a full time computer job (as of today anyways), a side lawn business, side moving business, land, antiques, alot of apocalypse items such as 50-60 gallons of fresh spring water at any given minute, HP 78/79 Snowfighter Dana 60's out the ass to sell off to you guys

and a stash of cash in an undisclosed location at my home.
As for a 401K diversification, why would I ever want to settle with any amount of money making 4-5% max in return (and no guarantee at that much) when even real estate averages 7%+??? And then the unavailability to withdraw any lump sums after retirement of my own hard earned money??? And as said, it's 35% and 67 now, what will it be in 20-25 years?
I agree with everything you all have said but there's definitely 2 sides to this... We indeed all have different views and a 401K nipple isn't life's only answer. And quite possibly even a bad mistake??? Will be interesting to keep in touch to compare when the time comes to whatever happens to ALL of us in the future!

None of us have a crystal ball to say that a 401K will amount to anything unless you settle for a low guaranteed interest.
Do keep in mind I had nothing but a bag of clothes and a piece of crap 3 cylinder Chevrolet Sprint that was dying at every stop just 20 years ago when I gambled and came here looking for a job. I have absolutely "0" inheritance. And if it wasn't for withdrawing my 401K I would still be driving the same truck I finally retired after being driven for 15+ years (Ole Duke everybody knows me knows of). And nothing but an empty shop and unstopping cast iron plumbing and changing out the old fuses since we only had 3 120V's and extension cords everywhere. Plus the $300+ electric bills from drafty windows and no insulation.
You gotta know when to hold em. Know when to fold em. Know when to walk away and know when to run.