I'm trying to help my parents now their at retirement age and am seeing first hand what not planning for your future looks like. They hit retirement with nothing but a small social security check every month. Not even enough to cover rent in most places.
I don't know how much you have in your 401k, but it will be worth literally hundreds of thousands more if you pull it out when you retire. You aren't just paying the penalties now, you're paying for potentially decades of compounding.
But if by some tragedy you don't die young, your older self is gonna be pissed at younger you for costing him hundreds of thousands of dollars.
The thing is, every dollar you spend on insurance is a dollar (and its interest) you lose. Furthermore, we don't know when it will pop. 1 year? 5 years?
The more reasonable solution is probably gradually reduce exposure to US markets by selling SP500 shares and turning to Europe and emerging markets ETFs. No need to cash out 401k.
If you just look at the past 20 years, the US has had exceptional returns compared to the rest of the world.
The thing is, historically, high PE ratios like what we're seeing in the US do not correlate with short term returns that are as high. Expected future returns decrease as the PE ratios go up in a pretty linear fashion.
https://am.jpmorgan.com/us/en/asset-management/institutional...
If you want a different point to backtest from, try Japan in the 80s and early 90s