so now with 75k you've got to pay for living expenses (taxes already removed) and lets be very generous and only take out 25k for that stuff. (~1k for rent, ~1k for food and everything else)
So even with saving 50k its going to take you 10 years to get to 500k and perhaps only 7 if you invest wisely.
Anyways sorry to be picky but 500k is not easily saved up on such a large salary.
(I am aware that the math does not pan out that way, but the fact remains that if you have confiscatory levels of taxes at the higher brackets, the cost of marginal (negative) increase in your base salary ends up working in your favor)
~35% goes out to your standard/official taxes
then you pay ~8% of whatever you spend to cover sales tax
then you pay ~2% of whatever your home is worth for property taxes (renters don't see this as tax but its built into the monthly payment)
and then there are lots of other smaller things like the car registration fees, bridge tolls (that may be a more of a bay area thing).
Anyhow its not exact but the way I budget is that 50% of my income is for actual spending/saving and have found that that ends up being about right
I only make $50k and I'm saving $30k a year. I'm fairly sure if I quadrupled my income I could at least double my savings.
If you want to feel safer, save more cash until you switch to do whatever you want to do. Some people find that no matter how much they save up, they never feel comfortable- don't fall into that trap. Know the real risk here- the risk of not doing what you want to do in life, because you need a "safety blanket" job.