Still working here with 15 years of legal practice under my belt. Don't quite know what my RE age will be, but FI had already been achieved until DW and I bought a new house a couple of days ago. Probably tacked on a couple more years of working, but QOL will go up significantly once we move in. Less time in the car, more room for everyone, etc... The house will only go up (famous last words), but this is because it is in a top tier school district and its close proximity to D.C.
Just a quick thought on "the number of years working" and the meaning of such number. Many folks on this board who FIRE'd still have a spouse that works, no spouse, or no kids, so it may be a bit misleading to consider a low(er) end number as being an accurate predictor of FIRE viability at such age. The same goes for folks who put in ~20 years with the military or government under the old pension system(s). Working for private industry is riskier, and I'm seeing a fair number of folks who had to put in 30+ years of working before becoming FIRE'd.
Last but not least, Jeff55 has a great attitude and he couldn't be more accurate. Once you reach FI, your once-tedious career becomes tolerable or even enjoyable. My father once told his boss the following - "[Boss' name here], I do this job because I like it. The day I stop liking it is the day I quit." After his boss' sister (she was the finance manager) made my father's life miserable by short-changing him on billings, he walked into his Boss' office and said "I quit" and walked right out. Needless to say, his then-former boss was quite surprised my father went through with his threat. My father then turned around and sued his former boss for the unpaid billings - and won.