To become FIRE you must have to earn a huge salary. I am very frugal and earn a low salary because I enjoy my job. I imagine wanted to retire early is due to hating your job boring/stressful etc. If you have a creative job, relaxed later back working environment, friends with colleges etc it’s nice. It also makes free time more valuable as I feel I’ve earned it. There are losing rewarding jobs helping people, working with animals, being creative etc....