practically every job in the entire economy and even most jobs in BA dont have LIFO, yet the people in those jobs have long and successful careers and make big financial decisions all the time.
If you leave your job in almost any other industry you can find an equivalent one that offers more or less identical pay / terms and conditions.
In aviation you join a seniority based company at the very bottom irrespective of your skills and experience.
I'm not saying it's the right thing.