For me, the best route to confidence was through analysis.
(I believe I have the math under control)
Politely disagree. Your current assessment of your expenses is incorrect/incomplete, and anyway it is less relevant than what you anticipate your expenses to be in retirement.
I'd recommend you make a good estimate of your post-FIRE expenses.
You can start from your "current" expenses, but several corrections need to be made.
Specifically:
The P in PITI is not an expense.
The Insurance part of PITI seems to be missing from your expenses.
Your mortgage ends. Your current math requires 1700/mo * 12mo / 3.5% = ~$583k in your stache to support your mortgage. IMO, you should just use the pay-off amount to budget ($232k), whether or not you plan to pay it off before retiring.
After-school care is similarly short-lived and will only be required for a few more years, it seems.
College(s) may be an expense.
Health Insurance expenses will likely change dramatically post-retirement. Go figure out what you'll likely pay.
Income Taxes seem to be ignored in your current expenses. Go estimate your post-FIRE tax situation.
Brokerage account contributions are not an expense.$4.15M at a conservative 3.5% WR gives me just over $145k which more or less matches our current spending
Even if you only correct the $2k of savings into your brokerage, it would bring your current expenses to $10,300, which would be just below 3.0%.
Then if you model paying off your mortgage, you find:
(($10300 - $1700)*12)/(4,150,000-232,000) = 2.64%
Then, yes, go trim lots of fat from your budget, too.
Then go model your wife wanting to keep working for a few more years.
My point is that the math seems to be indicating a *much* better situation than what you've sketched for yourself in your post. I suspect you're not fully appreciating how good of a position you're already in.
Life Situation:
What if…
…markets tank shortly after I quit and we’re exposed to massive sequence of returns risk?
…I’m forced to look for work in a recession to replenish our depleted stash, but can only find jobs that are significantly worse than what I currently have?
…several years of retirement render me unhireable for jobs that any typical person would consider “good” (i.e., some combination of good compensation, flexibility, meaningful work, etc.)
You're only looking at the
possible negative effects of quitting your job.
Have you given as much consideration to the
definite negative outcomes of continuing in your job?
* Less time for family, especially while your kids are young and before they get busy with their own lives in the mid-teen years?
* Less time for non-work goals. Not only in the present sense of having only so many hours per week, but also in the bigger picture sense of only having so many years of your life?
* Less health for non-work goals. You're 44. When I was 43 I shifted to part-time work because I knew that while I wasn't old yet, I wasn't young any longer either. I fully retired at 45. I had physical goals I wanted to pursue, and no guarantee that I'd still be capable of those goals if I delayed retirement to work a few more years. On the contrary -- more years in a stressful work environment would hasten a decline of health, while early retirement's reduction of stress and ample time for exercise would increase it.
With all the money you have, can you really afford to not retire?