I agree with you, but many people are doing something wrong. I've known plenty of people in tech who do not seem to be able to live below their means. I've had coworkers/managers/friends look at me like I had an extra head when I balk at the cost of things that don't even seem to register for them, especially when I mention I save 40-50% of my net income (and my pay isn't particularly impressive by silicon valley standards).
It's easy to save with no debt, no family and an income that is even 50% of the typical entry-level SV income. Most--as in the majority--of people who "work in tech" especially of they're younger than 40 had to take on significant student loan debt to get degrees, certifications and what have you to get those jobs. Your savings rate is extraordinarily unusual, and it doesn't necessarily mean you're smarter about money matters, or that everybody else is dumb about them.
