50% for security, let the remaining 50% run. We can spend countless hours modeling the risk and return delta of various percentages and against non correlated asset classes you might diversify into once liquid, but most of life is luck; you can do everything right and still lose. This makes it easy, imho.
(not investing advice, just a rando, n=1)
Edit: noir_lord indeed! Good eye. https://www.youtube.com/watch?v=1TCX90yALsI
The mathematical answer is that if your interest rate is lower than the expected returns of some kind of portfolio you have, than you'll make more money investing.
But I like to bring up what Morgan Housel, author of the book The Psychology of Money, said on paying down his mortgage:
> It just increased our independence, even if it made no sense on paper. So that's another element of debt that I think goes misunderstood. And a lot of that for both of those points is this idea that people don't make financial decisions on a spreadsheet. They don't make them in Excel. They make financial decisions at the dinner table. That's where they're talking about their goals and their own different personalities and their own unique fears and their own unique skills and whatnot. So that's why I kind of push people to say like, it's okay to make financial decisions that don't make any sense on paper if they work for you, if they check the boxes of your psychology and your goals that makes sense for you. And for me, extreme aversion, what looks like an irrational aversion today, and I would say is an irrational aversion to debt, is what works for me and what makes me happy, so that's why I've done it.
- https://www.diewithzerobook.com/welcome
Read it earlier this year and it definitely changed some of my thinking along those same lines.
My loose summary of the book:
"Any money left in the bank when you die is essentially wasted - you could have used it to have experiences when you were alive, or given it to family / charity earlier when it would have had more benefit. Figure out what major experiences and memories you want to have in life, plan to do them earlier when you have health and time, and build up memories for later in life."
I didn't find the discussions of how to plan out retirement savings very useful - there's a lot better info on withdrawal approaches in various FIRE-related groups.
But the "be willing to spend now on activities you might not be able to do later / don't hold off on 'living' until you're retired" argument made a _lot_ of sense to me for a variety of reasons, and it was a major factor in researching early retirement a few months later (and deciding to make that a new goal. along with taking more vacations before then).
You maximise expected value not by putting everything into the single highest-EV bet, but by sizing your bets according to https://en.wikipedia.org/wiki/Kelly_criterion
Frank: What you got on you?
Jim Bennett: Nothing.
Frank: What you put away?
Jim Bennett: Nothing.
Frank: You get up two and a half million dollars, any asshole in the world knows what to do: you get a house with a 25 year roof, an indestructible Jap-economy shitbox, you put the rest into the system at three to five percent to pay your taxes and that's your base, get me? That's your fortress of fucking solitude. That puts you, for the rest of your life, at a level of fuck you. Somebody wants you to do something, fuck you. Boss pisses you off, fuck you! Own your house. Have a couple bucks in the bank. Don't drink. That's all I have to say to anybody on any social level. Did your grandfather take risks?
Jim Bennett: Yes.
Frank: I guarantee he did it from a position of fuck you. A wise man's life is based around fuck you. The United States of America is based on fuck you. You're a king? You have an army? Greatest navy in the history of the world? Fuck you! Blow me. We'll fuck it up ourselves."
Obviously you are guessing probabilities to plug in but they can be based on other exits etc. Someone in the know on startup equity could offer this as a consultation service.
I've also got a period correct radio in there from bmwradios.com (radio wizard from estonia) who gave it bluetooth functionality along with a period correct panel in the console for a microphone, so I can talk hands free while I'm driving. He also modified the radio for me to read out the different GTA 3/4/5 radio stations and I can switch them around as I only listen to GTA radio and commercials when driving [1]. Besides it being 900kg with no airbags, it's the perfect car.
Between e30zone, the bentley manual, and realOEM [3] amongst the other infinite amount of resources it's impossible not to do your own work on it and it's usually easy. It really is a thinkpad in car form. Most parts are still produced and if they aren't you can get any number of things from third party shops like e30garage.no [4] if it's not on FCPEuro. Lot's of parts are also plug'n'play between different BMW models like steering racks which are quite easily swappable.
[0] https://i.imgur.com/kjt2ATf.jpeg
[1] https://i.imgur.com/uenzzLq.mp4
[2] bonus winter video: https://i.imgur.com/KG2IlgN.mp4
