Hmmm welll lets see. Some of us set out to do it all of our careers, but got repeatedly furloughed, company goes Chapter 11, Company go out of business, Company failed to make payroll all together, furloughed again, Company offer you a job at one of their regionals, Regional Weenie Chief Pilots push you to break regs like their college age lackeys do etc etc etc.
At some point in time you say F*ck it. Time for a real job with stability.
Thats why not everyone flys.