And this is exactly the problem with tech. At 35, you're only about one decade into your career.
Lawyers, doctors, professors, etc. at 35 would still be considered relatively young, with plenty of time to become partner, senior surgeon, obtain tenure, whatever. But you're now at peak salary, and can expect inflation raises now.
And worst of all, you've got 30 years left until you can obtain Medicare, so if you aren't working full time at a job with decent benefits, you're absolutely screwed, especially if you 'dare' decide to have a family, 30 year mortgage, etc.
People often live 'till mid 80s nowadays, and can't receive any sort of benefits (in the US) 'till mid to late 60s. If your career is peaked and trending downhill at 35, and you're not making millions of dollars in your prime (professional sports, fashion model), there is something wrong with your industry.