I had done that, frustrated of working for 18 hours a day, including weekends and holidays for more than a year. But then, I did not had EMIs like home loan, car loan, personal loan. I was married and staying on rent. My wife was also frustrated with my work schedule and she too agreed with my decision.
I resigned from my job, stayed at home for 2 weeks straight, then went for sea shore trip with my wife for a week , came back, updated my resume and was hired in first interview on day one...
All my praises will go to my wife, she stayed with me in budget hotels, homestays , travelled by public bus and all. She just wanted my time.
Now, I can't dare , because of my liabilities... But yes, a lot of people do leave jobs, but it depends on what support you have and your financial liabilities